diff --git a/MyTracks/res/drawable-hdpi/menu_stop_gps.png b/MyTracks/res/drawable-hdpi/menu_stop_gps.png
new file mode 100644
index 000000000..48c28191f
Binary files /dev/null and b/MyTracks/res/drawable-hdpi/menu_stop_gps.png differ
diff --git a/MyTracks/res/drawable-mdpi/menu_stop_gps.png b/MyTracks/res/drawable-mdpi/menu_stop_gps.png
new file mode 100644
index 000000000..7181d60c0
Binary files /dev/null and b/MyTracks/res/drawable-mdpi/menu_stop_gps.png differ
diff --git a/MyTracks/res/drawable-xhdpi/menu_stop_gps.png b/MyTracks/res/drawable-xhdpi/menu_stop_gps.png
new file mode 100644
index 000000000..6f6e64d9b
Binary files /dev/null and b/MyTracks/res/drawable-xhdpi/menu_stop_gps.png differ
diff --git a/MyTracks/res/layout/choose_activity_type.xml b/MyTracks/res/layout/choose_activity_type.xml
index ff1fdcd5a..38fa4e80a 100644
--- a/MyTracks/res/layout/choose_activity_type.xml
+++ b/MyTracks/res/layout/choose_activity_type.xml
@@ -18,7 +18,6 @@ limitations under the License.
   android:layout_height="wrap_content"
   android:layout_width="match_parent"
   android:numColumns="4"
-  android:paddingBottom="20dp"
-  android:paddingTop="20dp"
-  android:stretchMode="columnWidth"
-  android:verticalSpacing="20dp" />
+  android:padding="4dp"
+  android:stretchMode="spacingWidth"
+  android:verticalSpacing="4dp" />
diff --git a/MyTracks/res/layout/track_edit.xml b/MyTracks/res/layout/track_edit.xml
index ad5dad6e9..b179b81dd 100644
--- a/MyTracks/res/layout/track_edit.xml
+++ b/MyTracks/res/layout/track_edit.xml
@@ -41,20 +41,20 @@ limitations under the License.
         android:layout_width="match_parent"
         android:orientation="horizontal" >
         <AutoCompleteTextView
+          android:gravity="bottom"
           android:hint="@string/track_edit_activity_type_hint"
           android:id="@+id/track_edit_activity_type"
           android:imeOptions="actionNext"
           android:layout_gravity="bottom"
+          android:layout_height="fill_parent"
           android:layout_weight="1"
           android:layout_width="0dp"
           style="@style/EditCategory" />
-        <ImageButton
-          android:contentDescription="@string/activity_type_walking"
+        <Spinner          
           android:id="@+id/track_edit_activity_type_icon"
           android:layout_gravity="bottom"
           android:layout_height="wrap_content"
-          android:layout_width="wrap_content"
-          android:src="@drawable/track_walk" />
+          android:layout_width="wrap_content" />
       </LinearLayout>
       <TextView
         android:text="@string/generic_description"
diff --git a/MyTracks/src/com/google/android/apps/mytracks/TrackEditActivity.java b/MyTracks/src/com/google/android/apps/mytracks/TrackEditActivity.java
index 09d1b5ccf..ec9f47b8f 100644
--- a/MyTracks/src/com/google/android/apps/mytracks/TrackEditActivity.java
+++ b/MyTracks/src/com/google/android/apps/mytracks/TrackEditActivity.java
@@ -1,12 +1,12 @@
 /*
  * Copyright 2008 Google Inc.
- * 
+ *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not
  * use this file except in compliance with the License. You may obtain a copy of
  * the License at
- * 
+ *
  * http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
@@ -20,24 +20,31 @@ import com.google.android.apps.mytracks.content.MyTracksProviderUtils;
 import com.google.android.apps.mytracks.content.Track;
 import com.google.android.apps.mytracks.fragments.ChooseActivityTypeDialogFragment;
 import com.google.android.apps.mytracks.fragments.ChooseActivityTypeDialogFragment.ChooseActivityTypeCaller;
+import com.google.android.apps.mytracks.util.ApiAdapterFactory;
 import com.google.android.apps.mytracks.util.TrackIconUtils;
 import com.google.android.apps.mytracks.util.TrackNameUtils;
 import com.google.android.maps.mytracks.R;
 
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.BitmapFactory.Options;
 import android.os.Bundle;
 import android.util.Log;
+import android.view.KeyEvent;
+import android.view.MotionEvent;
 import android.view.View;
 import android.widget.AdapterView;
 import android.widget.ArrayAdapter;
 import android.widget.AutoCompleteTextView;
 import android.widget.Button;
 import android.widget.EditText;
-import android.widget.ImageButton;
+import android.widget.ImageView;
+import android.widget.Spinner;
 
 /**
  * An activity that let's the user see and edit the user editable track meta
  * data such as track name, activity type, and track description.
- * 
+ *
  * @author Leif Hendrik Wilden
  */
 public class TrackEditActivity extends AbstractMyTracksActivity
@@ -56,7 +63,7 @@ public class TrackEditActivity extends AbstractMyTracksActivity
 
   private EditText name;
   private AutoCompleteTextView activityType;
-  private ImageButton activityTypeIcon;
+  private Spinner activityTypeIcon;
   private EditText description;
 
   @Override
@@ -88,14 +95,14 @@ public class TrackEditActivity extends AbstractMyTracksActivity
         this, R.array.activity_types, android.R.layout.simple_dropdown_item_1line);
     activityType.setAdapter(adapter);
     activityType.setOnItemClickListener(new AdapterView.OnItemClickListener() {
-        @Override
+      @Override
       public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
         setActivityTypeIcon(TrackIconUtils.getIconValue(
             TrackEditActivity.this, (String) activityType.getAdapter().getItem(position)));
       }
     });
     activityType.setOnFocusChangeListener(new View.OnFocusChangeListener() {
-        @Override
+      @Override
       public void onFocusChange(View v, boolean hasFocus) {
         if (!hasFocus) {
           setActivityTypeIcon(TrackIconUtils.getIconValue(
@@ -104,15 +111,6 @@ public class TrackEditActivity extends AbstractMyTracksActivity
       }
     });
 
-    activityTypeIcon = (ImageButton) findViewById(R.id.track_edit_activity_type_icon);
-    activityTypeIcon.setOnClickListener(new View.OnClickListener() {
-        @Override
-      public void onClick(View v) {
-        new ChooseActivityTypeDialogFragment().show(getSupportFragmentManager(),
-            ChooseActivityTypeDialogFragment.CHOOSE_ACTIVITY_TYPE_DIALOG_TAG);
-      }
-    });
-
     iconValue = null;
     if (bundle != null) {
       iconValue = bundle.getString(ICON_VALUE_KEY);
@@ -120,14 +118,65 @@ public class TrackEditActivity extends AbstractMyTracksActivity
     if (iconValue == null) {
       iconValue = track.getIcon();
     }
-    setActivityTypeIcon(iconValue);
+
+    // Add a border around the icon
+    Options options = new BitmapFactory.Options();
+    options.inJustDecodeBounds = true;
+    BitmapFactory.decodeResource(getResources(), R.drawable.track_airplane, options);
+    final int padding = 4;
+    final int width = options.outWidth + 2 * padding;
+    final int height = options.outHeight + 2 * padding;
+
+    activityTypeIcon = (Spinner) findViewById(R.id.track_edit_activity_type_icon);
+    ArrayAdapter<StringBuilder> activityTypeIconAdapter = new ArrayAdapter<StringBuilder>(
+        this, android.R.layout.simple_spinner_item,
+        new StringBuilder[] {new StringBuilder(iconValue)}) {
+      @Override
+      public View getView(int position, View convertView, android.view.ViewGroup parent) {
+        ImageView imageView =
+            convertView != null ? (ImageView) convertView : new ImageView(getContext());
+        Bitmap source = BitmapFactory.decodeResource(
+            getResources(), TrackIconUtils.getIconDrawable(getItem(position).toString()));
+        if (ApiAdapterFactory.getApiAdapter().isSpinnerBackgroundLight()) {
+          source = TrackIconUtils.invertBitmap(source);
+        }
+        imageView.setImageBitmap(source);
+        imageView.setMinimumHeight(height);
+        imageView.setMinimumWidth(width);
+        imageView.setPadding(padding, padding, padding, padding);
+        return imageView;
+      }
+    };
+    activityTypeIcon.setAdapter(activityTypeIconAdapter);
+    activityTypeIcon.setOnTouchListener(new View.OnTouchListener() {
+      @Override
+      public boolean onTouch(View v, MotionEvent event) {
+        if (event.getAction() == MotionEvent.ACTION_UP) {
+          new ChooseActivityTypeDialogFragment().show(getSupportFragmentManager(),
+              ChooseActivityTypeDialogFragment.CHOOSE_ACTIVITY_TYPE_DIALOG_TAG);
+        }
+        return true;
+      }
+    });
+    activityTypeIcon.setOnKeyListener(new View.OnKeyListener() {
+      @Override
+      public boolean onKey(View v, int keyCode, KeyEvent event) {
+        if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
+          new ChooseActivityTypeDialogFragment().show(getSupportFragmentManager(),
+              ChooseActivityTypeDialogFragment.CHOOSE_ACTIVITY_TYPE_DIALOG_TAG);
+          return true;
+        } else {
+          return false;
+        }
+      }
+    });
 
     description = (EditText) findViewById(R.id.track_edit_description);
     description.setText(track.getDescription());
 
     Button save = (Button) findViewById(R.id.track_edit_save);
     save.setOnClickListener(new View.OnClickListener() {
-        @Override
+      @Override
       public void onClick(View v) {
         track.setName(name.getText().toString());
         String category = activityType.getText().toString();
@@ -152,7 +201,7 @@ public class TrackEditActivity extends AbstractMyTracksActivity
     } else {
       setTitle(R.string.menu_edit);
       cancel.setOnClickListener(new View.OnClickListener() {
-          @Override
+        @Override
         public void onClick(View v) {
           finish();
         }
@@ -174,12 +223,17 @@ public class TrackEditActivity extends AbstractMyTracksActivity
 
   /**
    * Sets the activity type icon.
-   * 
+   *
    * @param value the icon value
    */
   private void setActivityTypeIcon(String value) {
     iconValue = value;
-    activityTypeIcon.setImageResource(TrackIconUtils.getIconDrawable(value));
+    ArrayAdapter<StringBuilder> adapter =
+        (ArrayAdapter<StringBuilder>) activityTypeIcon.getAdapter();
+    StringBuilder stringBuilder = adapter.getItem(0);
+    stringBuilder.delete(0, stringBuilder.length());
+    stringBuilder.append(value);
+    adapter.notifyDataSetChanged();
   }
 
   @Override
diff --git a/MyTracks/src/com/google/android/apps/mytracks/TrackListActivity.java b/MyTracks/src/com/google/android/apps/mytracks/TrackListActivity.java
index 6f555ab11..ae161b502 100644
--- a/MyTracks/src/com/google/android/apps/mytracks/TrackListActivity.java
+++ b/MyTracks/src/com/google/android/apps/mytracks/TrackListActivity.java
@@ -743,6 +743,7 @@ public class TrackListActivity extends AbstractSendToGoogleActivity
   private void updateMenuItems(boolean isRecording) {
     if (startGpsMenuItem != null) {
       startGpsMenuItem.setTitle(startGps ? R.string.menu_stop_gps : R.string.menu_start_gps);
+      startGpsMenuItem.setIcon(startGps ? R.drawable.menu_stop_gps : R.drawable.menu_start_gps);
       startGpsMenuItem.setVisible(!isRecording);
     }
     if (importAllMenuItem != null) {
diff --git a/MyTracks/src/com/google/android/apps/mytracks/fragments/ChooseActivityTypeDialogFragment.java b/MyTracks/src/com/google/android/apps/mytracks/fragments/ChooseActivityTypeDialogFragment.java
index 33a6d2d8f..6211080ab 100644
--- a/MyTracks/src/com/google/android/apps/mytracks/fragments/ChooseActivityTypeDialogFragment.java
+++ b/MyTracks/src/com/google/android/apps/mytracks/fragments/ChooseActivityTypeDialogFragment.java
@@ -22,6 +22,8 @@ import com.google.android.maps.mytracks.R;
 import android.app.Activity;
 import android.app.AlertDialog;
 import android.app.Dialog;
+import android.graphics.BitmapFactory;
+import android.graphics.BitmapFactory.Options;
 import android.os.Bundle;
 import android.support.v4.app.DialogFragment;
 import android.view.View;
@@ -34,14 +36,14 @@ import java.util.List;
 
 /**
  * A DialogFragment to choose an activity type.
- * 
+ *
  * @author apoorvn
  */
 public class ChooseActivityTypeDialogFragment extends DialogFragment {
 
   /**
    * Interface for caller of this dialog fragment.
-   * 
+   *
    * @author apoorvn
    */
   public interface ChooseActivityTypeCaller {
@@ -69,8 +71,8 @@ public class ChooseActivityTypeDialogFragment extends DialogFragment {
 
   @Override
   public Dialog onCreateDialog(Bundle savedInstanceState) {
-    GridView gridView = (GridView) getActivity()
-        .getLayoutInflater().inflate(R.layout.choose_activity_type, null);
+    GridView gridView =
+        (GridView) getActivity().getLayoutInflater().inflate(R.layout.choose_activity_type, null);
 
     final List<String> iconValues = TrackIconUtils.getAllIconValues();
     List<Integer> imageIds = new ArrayList<Integer>();
@@ -78,11 +80,19 @@ public class ChooseActivityTypeDialogFragment extends DialogFragment {
       imageIds.add(TrackIconUtils.getIconDrawable(iconValue));
     }
 
-    ChooseActivityTypeImageAdapter imageAdapter = new ChooseActivityTypeImageAdapter(
-        getActivity(), imageIds);
+    Options options = new BitmapFactory.Options();
+    options.inJustDecodeBounds = true;
+    BitmapFactory.decodeResource(getResources(), R.drawable.track_airplane, options);
+    int padding = 32;
+    int width = options.outWidth + 2 * padding;
+    int height = options.outHeight + 2 * padding;
+    gridView.setColumnWidth(width);
+
+    ChooseActivityTypeImageAdapter imageAdapter =
+        new ChooseActivityTypeImageAdapter(getActivity(), imageIds, width, height, padding);
     gridView.setAdapter(imageAdapter);
     gridView.setOnItemClickListener(new OnItemClickListener() {
-        @Override
+      @Override
       public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
         dismiss();
         caller.onChooseActivityTypeDone(iconValues.get(position));
@@ -92,4 +102,4 @@ public class ChooseActivityTypeDialogFragment extends DialogFragment {
     return new AlertDialog.Builder(getActivity()).setNegativeButton(R.string.generic_cancel, null)
         .setTitle(R.string.track_edit_activity_type_hint).setView(gridView).create();
   }
-}
\ No newline at end of file
+}
diff --git a/MyTracks/src/com/google/android/apps/mytracks/fragments/ChooseActivityTypeImageAdapter.java b/MyTracks/src/com/google/android/apps/mytracks/fragments/ChooseActivityTypeImageAdapter.java
index f0418973d..114b9016f 100644
--- a/MyTracks/src/com/google/android/apps/mytracks/fragments/ChooseActivityTypeImageAdapter.java
+++ b/MyTracks/src/com/google/android/apps/mytracks/fragments/ChooseActivityTypeImageAdapter.java
@@ -26,17 +26,24 @@ import java.util.List;
 
 /**
  * Image adapter for choosing an activity type.
- * 
+ *
  * @author apoorvn
  */
 public class ChooseActivityTypeImageAdapter extends BaseAdapter {
 
   private final Context context;
   private final List<Integer> imageIds;
+  private final int width;
+  private final int height;
+  private final int padding;
 
-  public ChooseActivityTypeImageAdapter(Context context, List<Integer> imageIds) {
+  public ChooseActivityTypeImageAdapter(
+      Context context, List<Integer> imageIds, int width, int height, int padding) {
     this.context = context;
     this.imageIds = imageIds;
+    this.width = width;
+    this.height = height;
+    this.padding = padding;
   }
 
   @Override
@@ -63,6 +70,9 @@ public class ChooseActivityTypeImageAdapter extends BaseAdapter {
       imageView = (ImageView) convertView;
     }
     imageView.setImageResource(imageIds.get(position));
+    imageView.setMinimumHeight(height);
+    imageView.setMinimumWidth(width);
+    imageView.setPadding(padding, padding, padding, padding);
     return imageView;
   }
 }
diff --git a/MyTracks/src/com/google/android/apps/mytracks/util/Api11Adapter.java b/MyTracks/src/com/google/android/apps/mytracks/util/Api11Adapter.java
index 1ab8dca50..227b29d80 100644
--- a/MyTracks/src/com/google/android/apps/mytracks/util/Api11Adapter.java
+++ b/MyTracks/src/com/google/android/apps/mytracks/util/Api11Adapter.java
@@ -124,4 +124,9 @@ public class Api11Adapter extends Api10Adapter {
   public void invalidMenu(Activity activity) {
     activity.invalidateOptionsMenu();
   }
+  
+  @Override
+  public boolean isSpinnerBackgroundLight() {
+    return false;
+  }
 }
diff --git a/MyTracks/src/com/google/android/apps/mytracks/util/Api8Adapter.java b/MyTracks/src/com/google/android/apps/mytracks/util/Api8Adapter.java
index 3279e52eb..4fe71f9f9 100644
--- a/MyTracks/src/com/google/android/apps/mytracks/util/Api8Adapter.java
+++ b/MyTracks/src/com/google/android/apps/mytracks/util/Api8Adapter.java
@@ -133,6 +133,11 @@ public class Api8Adapter implements ApiAdapter {
     // Do nothing
   }
 
+  @Override
+  public boolean isSpinnerBackgroundLight() {
+    return true;    
+  }
+  
   @Override
   public boolean handleSearchKey(MenuItem menuItem) {
     // Return false and allow the framework to handle the search key.
diff --git a/MyTracks/src/com/google/android/apps/mytracks/util/ApiAdapter.java b/MyTracks/src/com/google/android/apps/mytracks/util/ApiAdapter.java
index d4949c47d..a8684ac8c 100644
--- a/MyTracks/src/com/google/android/apps/mytracks/util/ApiAdapter.java
+++ b/MyTracks/src/com/google/android/apps/mytracks/util/ApiAdapter.java
@@ -163,6 +163,13 @@ public interface ApiAdapter {
    */
   public void invalidMenu(Activity activity);
 
+  /**
+   * True if the spinner background is light color.
+   * <p>
+   * Due to changes in API level 11.
+   */
+  public boolean isSpinnerBackgroundLight();
+  
   /**
    * Handles the search key press. Returns true if handled.
    * <p>
diff --git a/MyTracks/src/com/google/android/apps/mytracks/util/TrackIconUtils.java b/MyTracks/src/com/google/android/apps/mytracks/util/TrackIconUtils.java
index 475976684..741680c55 100644
--- a/MyTracks/src/com/google/android/apps/mytracks/util/TrackIconUtils.java
+++ b/MyTracks/src/com/google/android/apps/mytracks/util/TrackIconUtils.java
@@ -19,6 +19,8 @@ package com.google.android.apps.mytracks.util;
 import com.google.android.maps.mytracks.R;
 
 import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.Color;
 import android.util.Pair;
 
 import java.util.ArrayList;
@@ -27,7 +29,7 @@ import java.util.List;
 
 /**
  * Utilities for track icon.
- * 
+ *
  * @author Jimmy Shih
  */
 public class TrackIconUtils {
@@ -43,48 +45,52 @@ public class TrackIconUtils {
 
   private TrackIconUtils() {}
 
-  private static LinkedHashMap<String, Pair<Integer, Integer>>
-      map = new LinkedHashMap<String, Pair<Integer, Integer>>();
+  private static LinkedHashMap<String, Pair<Integer, Integer>> map =
+      new LinkedHashMap<String, Pair<Integer, Integer>>();
 
   static {
-    map.put(AIRPLANE,
-        new Pair<Integer, Integer>(R.string.activity_type_airplane, R.drawable.track_airplane));
+    map.put(RUN, new Pair<Integer, Integer>(R.string.activity_type_running, R.drawable.track_run));
+    map.put(
+        WALK, new Pair<Integer, Integer>(R.string.activity_type_walking, R.drawable.track_walk));
     map.put(BIKE, new Pair<Integer, Integer>(R.string.activity_type_biking, R.drawable.track_bike));
-    map.put(BOAT, new Pair<Integer, Integer>(R.string.activity_type_boat, R.drawable.track_boat));
     map.put(
         DRIVE, new Pair<Integer, Integer>(R.string.activity_type_driving, R.drawable.track_drive));
-    map.put(RUN, new Pair<Integer, Integer>(R.string.activity_type_running, R.drawable.track_run));
     map.put(SKI, new Pair<Integer, Integer>(R.string.activity_type_skiing, R.drawable.track_ski));
     map.put(SNOW_BOARDING, new Pair<Integer, Integer>(
         R.string.activity_type_snow_boarding, R.drawable.track_snow_boarding));
-    map.put(
-        WALK, new Pair<Integer, Integer>(R.string.activity_type_walking, R.drawable.track_walk));
+    map.put(AIRPLANE,
+        new Pair<Integer, Integer>(R.string.activity_type_airplane, R.drawable.track_airplane));
+    map.put(BOAT, new Pair<Integer, Integer>(R.string.activity_type_boat, R.drawable.track_boat));
   }
 
-  private static int[] airplane = new int[] { R.string.activity_type_airplane,
-      R.string.activity_type_commercial_airplane, R.string.activity_type_rc_airplane };
-  private static int[] bike = new int[] { R.string.activity_type_biking,
-      R.string.activity_type_cycling, R.string.activity_type_dirt_bike,
-      R.string.activity_type_motor_bike, R.string.activity_type_mountain_biking,
-      R.string.activity_type_road_biking, R.string.activity_type_track_cycling };
-  private static int[] boat = new int[] { R.string.activity_type_boat, R.string.activity_type_ferry,
-      R.string.activity_type_motor_boating, R.string.activity_type_rc_boat };
-  private static int[] drive = new int[] { R.string.activity_type_atv,
-      R.string.activity_type_driving, R.string.activity_type_driving_bus,
-      R.string.activity_type_driving_car };
-  private static int[] run = new int[] { R.string.activity_type_running,
-      R.string.activity_type_street_running, R.string.activity_type_track_running,
-      R.string.activity_type_trail_running };
-  private static int[] ski = new int[] {
-      R.string.activity_type_cross_country_skiing, R.string.activity_type_skiing };
-  private static int[] snowBoarding = new int[] { R.string.activity_type_snow_boarding };
-  private static int[] walk = new int[] { R.string.activity_type_hiking,
+  private static int[] airplane = new int[] {
+      R.string.activity_type_airplane, R.string.activity_type_commercial_airplane,
+      R.string.activity_type_rc_airplane};
+  private static int[] bike = new int[] {R.string.activity_type_biking,
+      R.string.activity_type_cycling,
+      R.string.activity_type_dirt_bike,
+      R.string.activity_type_motor_bike,
+      R.string.activity_type_mountain_biking,
+      R.string.activity_type_road_biking,
+      R.string.activity_type_track_cycling};
+  private static int[] boat = new int[] {R.string.activity_type_boat, R.string.activity_type_ferry,
+      R.string.activity_type_motor_boating, R.string.activity_type_rc_boat};
+  private static int[] drive = new int[] {
+      R.string.activity_type_atv, R.string.activity_type_driving,
+      R.string.activity_type_driving_bus, R.string.activity_type_driving_car};
+  private static int[] run = new int[] {
+      R.string.activity_type_running, R.string.activity_type_street_running,
+      R.string.activity_type_track_running, R.string.activity_type_trail_running};
+  private static int[] ski =
+      new int[] {R.string.activity_type_cross_country_skiing, R.string.activity_type_skiing};
+  private static int[] snowBoarding = new int[] {R.string.activity_type_snow_boarding};
+  private static int[] walk = new int[] {R.string.activity_type_hiking,
       R.string.activity_type_off_trail_hiking, R.string.activity_type_speed_walking,
-      R.string.activity_type_trail_hiking, R.string.activity_type_walking };
+      R.string.activity_type_trail_hiking, R.string.activity_type_walking};
 
   /**
    * Gets the icon drawable.
-   * 
+   *
    * @param iconValue the icon value
    */
   public static int getIconDrawable(String iconValue) {
@@ -97,7 +103,7 @@ public class TrackIconUtils {
 
   /**
    * Gets the icon activity type.
-   * 
+   *
    * @param iconValue the icon value
    */
   public static int getIconActivityType(String iconValue) {
@@ -121,7 +127,7 @@ public class TrackIconUtils {
 
   /**
    * Gets the icon value.
-   * 
+   *
    * @param context the context
    * @param activityType the activity type
    */
@@ -153,9 +159,37 @@ public class TrackIconUtils {
     return "";
   }
 
+  /**
+   * Inverts the colors in a bitmap.
+   *
+   * @param source the source
+   */
+  public static Bitmap invertBitmap(Bitmap source) {
+    Bitmap output = Bitmap.createBitmap(source.getWidth(), source.getHeight(), source.getConfig());
+    int height = source.getHeight();
+    int width = source.getWidth();
+    int pixelColor;
+    int alpha;
+    int red;
+    int green;
+    int blue;
+
+    for (int y = 0; y < height; y++) {
+      for (int x = 0; x < width; x++) {
+        pixelColor = source.getPixel(x, y);
+        alpha = Color.alpha(pixelColor);
+        red = 255 - Color.red(pixelColor);
+        green = 255 - Color.green(pixelColor);
+        blue = 255 - Color.blue(pixelColor);
+        output.setPixel(x, y, Color.argb(alpha, red, green, blue));
+      }
+    }
+    return output;
+  }
+
   /**
    * Returns true if the activity type is in the list.
-   * 
+   *
    * @param context the context
    * @param activityType the activity type
    * @param list the list