If I understand you correctly you want to pick your Color sprite with the right frame and move to it?
You can actually pick by animation frame..
I made you a little capx:
The red box is your OK. It waits 1 second, and then it picks a Color instance by a random animation frame (you could do that with the frame you need, of course), and lerps itself onto the position of the picked Color.
You have to be aware though that having more than one instance with the same frame number will cause more than 1 get picked, and that might screw up your whole setup, so be extra careful with methods like that..