Color replacement question

1

ive been trying to get this idea working and so far have made a bit of headway. but im running into some problems.

movie can be viewed here

my code for the color swatch is this;



on (release) {
    var colorful = new Color("_root.trim");
    colorful.setRGB(0x789EF5);
    with (_root.trim) {
        _alpha = 50;
    }
    var colorful = new Color("_root.leftwall");
    colorful.setRGB(0x1F327A);
    with (_root.leftwall) {
        _alpha = 50;
    }
    var colorful = new Color("_root.rightwall");
    colorful.setRGB(0x9228AC);
    with (_root.rightwall) {
        _alpha = 50;
    }
}

I’d imagine this is pretty sloppy, but im pretty new at this. what im trying to do is have several pallets, with different color variations, apply those colours to a mask i have over this image. I did try to have this image and mask in its own movie clip, but then the colours stop loading if i do that.

Is there a simpler, or better way of accomplishing this? I thought about arrays, but I’m not sure.

Cheers