How to "tint" (change colour of an object) using the tween class?

[chur]

Hi,

Im creating a function that controls all the rollovers on my page and i need to know how to implement the tween class so it can change the color of the object. For example this controls the alpha value (AS2.0)

function controlRollover(mainMc:String, subMc:String):Void {
    new Tween(_root[mainMc][subMc],"_alpha",Regular.easeOut,0,100,2,true);        
} 

What property can i use in place of _alpha? and how do i specify the color?

Thx

Edit: alright just found out there's no property to change color (no idea why). So i guess i can't do this unless i create duplicate objects and use _alpha but that defeats the purpose of using AS...

[Gemione]

I think you can change teh RGB values of Graphics. Maybe not MovieClips