library/src/main/java/de/mrapp/android/view/FloatingActionButton.java
private Drawable createBackgroundDrawable(@ColorInt final int color) {
        OvalShape shape = new OvalShape();
        ShapeDrawable drawable = new ShapeDrawable(shape);
        drawable.getPaint().setColor(color);
        return drawable;
    }
private Drawable createBackgroundDrawable(@ColorInt final int color) {
        OvalShape shape = new OvalShape();
        ShapeDrawable drawable = new ShapeDrawable(shape);
        drawable.getPaint().setColor(color);
        return drawable;
    }
Creates and returns a drawable with a specific color, which can be used as the floating
action button's background.

@param color
The color of the background as an {@link Integer} value
@return The drawable, which has been created, as an instance of the class {@link Drawable}