Remove ThemeCache.getThemeColor(index)

app/src/main/java/org/tasks/tags/TagRecyclerAdapter.java

@@ -64,7 +64,7 @@ public class TagRecyclerAdapter extends RecyclerView.Adapter<TagPickerViewHolder
   private int getColor(TagData tagData) {
     ThemeColor themeColor =
         tagData.getColor() == 0
-            ? themeCache.getThemeColor(19)
+            ? themeCache.getUntaggedColor()
             : newThemeColor(context, tagData.getColor());
     return themeColor.getPrimaryColor();
   }

app/src/main/java/org/tasks/themes/ThemeCache.java

@@ -84,7 +84,7 @@ public class ThemeCache {
               getColor(context, i == 0 ? R.color.black_54 : R.color.white_60)));
     }
     untaggedColor =
-        new ThemeColor(context, 19, getColor(context, R.color.tag_color_none_background));
+        new ThemeColor(context, getColor(context, R.color.tag_color_none_background));
   }
 
   public WidgetTheme getWidgetTheme(int index) {
@@ -109,11 +109,6 @@ public class ThemeCache {
     return themes.get(index);
   }
 
-  public ThemeColor getThemeColor(int index) {
-    return new ThemeColor(
-        context, index, ContextCompat.getColor(context, ThemeColor.COLORS[index]));
-  }
-
   public ThemeColor getLauncherColor(int index) {
     return new ThemeColor(
         context, index, ContextCompat.getColor(context, ThemeColor.LAUNCHER_COLORS[index]), false);