Configured color attribute properly for focus outline

Bug: 310953377
Test: Manual
Flag: ACONFIG com.android.launcher3.enable_focus_outline Development
Change-Id: If85c33ecea3241e69927917e910386d0346ef43b

src/com/android/launcher3/keyboard/FocusIndicatorHelper.java

@@ -22,6 +22,7 @@ import android.view.View.OnFocusChangeListener;
 
 import com.android.launcher3.Flags;
 import com.android.launcher3.R;
+import com.android.launcher3.util.Themes;
 
 /**
  * A helper class to draw background of a focused view.
@@ -30,8 +31,9 @@ public abstract class FocusIndicatorHelper extends ItemFocusIndicatorHelper<View
         implements OnFocusChangeListener {
 
     public FocusIndicatorHelper(View container) {
-        super(container, container.getResources().getColor(Flags.enableFocusOutline()
-                ? R.color.focus_outline_color : R.color.focused_background));
+        super(container, Flags.enableFocusOutline() ? Themes.getAttrColor(container.getContext(),
+                R.attr.focusOutlineColor)
+                : container.getResources().getColor(R.color.focused_background));
     }
 
     @Override