Thank you izno.
I got it working like this:
PHP Code:
            mouseEnter
            
{
                
setItemColor "window_name" backcolor 1 0.6 0.3 .3;
                
setItemColor "window_name" bordercolor 0 1 0 1;
            }
            
mouseExit
            
{
                
setItemColor "window_name" backcolor 0.2 0.8 0.2 .3;
                
setItemColor "window_name" bordercolor 1 0.5 0 1;
            }