code: public void setColor(Color newColor) {
  		if (newColor != null) {
  			color.set(newColor);
  		} else {
  			color.set(DefaultColor);
  		}
  		colorF = color.toFloatBits();
  		if (staticLight) dirty = true;
  	}
docs: Sets light color
  
  <p>NOTE: you can also use colorless light with shadows, e.g. (0,0,0,1)
  
  @param newColor
  RGB set the color and Alpha set intensity
  
  @see #setColor(float, float, float, float)