Changing the color of something with AS

so i started experimenting with flash again and want to make an animation with AS. i already have the graphics but what i would like to do is change the color of something (make it fade into another color). then once it has reached a certain color, start the next object in the sequence to change colors as well. i want this to be an endless cycle. So what is the simplest way to change colors of something with AS? thanks