code: public void setImageColor(float r, float g, float b) {
  		setColor(TOP_LEFT, r, g, b);
  		setColor(TOP_RIGHT, r, g, b);
  		setColor(BOTTOM_LEFT, r, g, b);
  		setColor(BOTTOM_RIGHT, r, g, b);
  	}
docs: Set the filter to apply when drawing this image
  
  @param r The red component of the filter colour
  @param g The green component of the filter colour
  @param b The blue component of the filter colour