Having a print brick switch between two or three 'frames' for an animation?
Has already been done.
To my knowledge, your thinking of a color changer.
I remember someone releasing an addon where you would type in a slash cmd and it would make a grid out of 1x1 bricks for you, you paint em, than type in another command, and you can paint the other frame, and so on to make an animation.
I haven't tested this myself, but by the description, this is what it does.