library/src/main/java/com/michaldrabik/tapbarmenulib/TapBarMenu.java
public void setMenuBackgroundColor(int colorResId) {
    backgroundColor = ContextCompat.getColor(getContext(), colorResId);
    paint.setColor(backgroundColor);
    invalidate();
  }
public void setMenuBackgroundColor(int colorResId) {
    backgroundColor = ContextCompat.getColor(getContext(), colorResId);
    paint.setColor(backgroundColor);
    invalidate();
  }
Sets TapBarMenu's background color from given resource.
@param colorResId Color resource id. For example: R.color.holo_blue_light