Use logo (white) for generic track (replaces similar a png with gradient).

src/main/java/de/dennisguse/opentracks/ChartView.java

@@ -191,7 +191,7 @@ public class ChartView extends View {
         markerPaint.setColor(context.getResources().getColor(android.R.color.darker_gray));
         markerPaint.setAntiAlias(false);
 
-        pointer = context.getResources().getDrawable(R.drawable.ic_logo);
+        pointer = context.getResources().getDrawable(R.drawable.ic_logo_color_24dp);
         pointer.setBounds(0, 0, pointer.getIntrinsicWidth(), pointer.getIntrinsicHeight());
 
         Drawable statisticsMarker = getResources().getDrawable(R.drawable.ic_marker_yellow_pushpin);

src/main/java/de/dennisguse/opentracks/services/TrackRecordingService.java

@@ -425,7 +425,7 @@ public class TrackRecordingService extends Service {
                 .setContentText(getString(messageId))
                 .setContentTitle(getString(R.string.app_name))
                 .setOngoing(true)
-                .setSmallIcon(R.drawable.ic_logo)
+                .setSmallIcon(R.drawable.ic_logo_color_24dp)
                 .setCategory(Notification.CATEGORY_SERVICE)
                 .setWhen(System.currentTimeMillis());
         startForeground(1, builder.build());

src/main/java/de/dennisguse/opentracks/util/TrackIconUtils.java

@@ -79,10 +79,10 @@ public class TrackIconUtils {
      */
     public static int getIconDrawable(String iconValue) {
         if (iconValue == null || iconValue.equals("")) {
-            return R.drawable.ic_track_generic;
+            return R.drawable.ic_logo_24dp;
         }
         Pair<Integer, Integer> pair = MAP.get(iconValue);
-        return pair == null ? R.drawable.ic_track_generic : pair.second;
+        return pair == null ? R.drawable.ic_logo_24dp : pair.second;
     }
 
     /**