Fix storage summary background colors.

This changes the donut background color to a lighter blue and changes
the overall background to be a grey. Both of these colors match the
Battery implementation.

Bug: 35245772
Test: Manual
Change-Id: I8e12afe4434a0e2428384fc496cab5c05dc998ee

src/com/android/settings/fuelgauge/BatteryMeterView.java

@@ -51,7 +51,7 @@ public class BatteryMeterView extends ImageView {
     public BatteryMeterView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
 
-        final int frameColor = context.getColor(R.color.batterymeter_frame_color);
+        final int frameColor = context.getColor(R.color.meter_background_color);
         mAccentColorFilter = new PorterDuffColorFilter(
                 Utils.getColorAttr(context, android.R.attr.colorAccent), PorterDuff.Mode.SRC_IN);
         mErrorColorFilter = new PorterDuffColorFilter(