docs: public void setNewCenterColor(int color) {
  		mCenterNewColor = color;
  		mCenterNewPaint.setColor(color);
  		if (mCenterOldColor == 0) {
  			mCenterOldColor = color;
  			mCenterOldPaint.setColor(color);
  		}
  		if (onColorChangedListener != null && color != oldChangedListenerColor ) {
  			onColorChangedListener.onColorChanged(color);
  			oldChangedListenerColor  = color;
  		}
  		invalidate();
  	}