@MathMagican you are very welcomed. For your code Color.argb(int, int, int, int) is a method in Android.graphics.Color, but it's not available in greenfoot.Color. For the problem I think it could be another bug in GreenfootImage I would check that later.
thx, upupzealot.
If someone else wants too help, the bar we are talking about is the one in my stargate space shooter scenario, created by danpost in his bar scenario
@erdelf that's just beyond my power I think.
@groengeel I hope someone code make a Greenfoot4ME also, but I don't think that's me.
BTW, I did some change to the code so the bar problem and mouse action with world may work correctly, would you test that again. I would send you the file in email later.
After all, @MathMagican is me with the UserInfo class(in local), I have to say thanks.