@SuppressWarnings("NullableProblems")
    @Override
    protected boolean verifyDrawable(Drawable who) {
        Drawable drawable = mTouchDrawable;
        return (drawable != null && who == mTouchDrawable) || super.verifyDrawable(who);
    }
Update the background color of the circle image view.

@param colorRes Id of a color resource.
caprice/ui/src/main/java/net/qiujuer/genius/ui/widget/FloatActionButton.java