Alpha & movement in actionscript

Hi all. Me again. I’m trying to teach myself some basics of AS so I’m starting with what I think should be easy stuff. I’ve worked through the tutorial here on Kirupa that shows how to animate an object using AS but I’m curious as to how I’d make it fade out or change colour on a button press. I’m sure there must be a tutorial somewhere but I can’t find it. Can anyone point me in the right direction?
Muchos gracias.