Softly changing actionscript tint

[size=2]Well, I’ve got the button to change colour, but want it to ease change, if that’s possible, like easing movements, but with colours.

var myColor = new Color(portback);
myColor.setTransform({rb:10, bb:17, gb:21});

And I don’t want the code to be too long, It doesn’t really matter, but I like my actionscripts clean :P.

[size=2]Thanks guys.[/size][/size]