I was looking for a POVray equivalent of procedural lights in AOI, and while I believe it is possible with some difficult povray scene code, the closest thing I came to doing it myself was projecting lights through another object, alas its not as flexible as AOI's way, but at least it has some neat ideas for the future.
basically the glowing thing in the center is a big lens with a multicolored pattern over it, and fake caustics from 3 rgb lights.
surprised I couldnt find a way as powerful as AOI for this, from the long running POVray project, but maybe they will improve in the future.