Changing Light Scripting?

So I made a thing,

and I want all of those white faces to have a changing color effect. Nothing too extreme, just slowly fading red to yellow to green etc. (Think what the rotating spot light does in NL2) Would I be able to accomplish this with scripting in NL2 or would this be something I would have to use another external program to create? I am not too familiar with the lighting engine yet.

[TTD03]

I think it could probably be done with scripting, but you should ask an extreme scripter like Magu for advice on this.