How to increment hex color?

[activa]

I'd like to gradually increase the color of a clip from 0xFFFFFF to 0x000000. Is there any easy way to do this, or do I have to split the hex value as a string, increment each color, and then reassemble it?

[activa]

I thought this would do it:

var outlineColor:ColorTransform = new ColorTransform(.9,.9,.9,1,0,0,0,0);
myContent.myOutline.transform.colorTransform = outlineColor;

But this makes it go from white to black????