I'm relatively new to this, but instead of animating with different colors, I would use the multis on different objects in the display and animate with those objects. For instance, I'm using multis in my tomato cage Christmas trees and they really pop. Using them to mark pathways is festive. You could make different geometric shapes and put cora on top of them to diffuse the light. (Think hop scotch or "lilly pads" - except in the shape you want - vertical applications would include polka dots, etc.) Arches are always cool, no matter what type of lights you use. Uh... that's about all I can think of on a Monday morning - I still need my coffee!
Hope this helps!