The rainbow's pretty good, not the best, but probably the best considering the size. You're the first person to use an altering filter, I bet. Also, I now know how powered clone works. It turns out it toggles like switch. I thought you just had to give a charge to it to switch it on. Stupid crappy description... I'm going to try replicating this now, to test my knowledge and skill with photons.
EDIT: I now know how to make lasers, and I know how powered clone works. Also, I like the filter design. I might've made something like that, if the game explained that filters absorb heat, instead of having to use HEAT and COOL...