The intricacies of the place-able lights, and whether forge filters stack? I'd like to do research into this. For instance, do Lights change in Forge Filters? Can Lights change if put together?
these are really simple questions you could learn the answers to by simply turning on forge and dropping in some effects and lights, ya know.
I don't think lights change in forge filters. I made a map that has a red and a blue light (for red base and blue base) and placed the next gen filter and purple filter on the map too (the affects of which stack), and you still can see that the lights are red and blue.