Well, yeah, I'm sure I can legally do it, but people get irate about odd things. If the original authors had a problem with it, I could (try to*) make it for myself and just not release it. Or just make it so the user selects which two images to overlay. Colourising the Kethane map shouldnt be too hard, but of course, you'd lose the trademark green. a) sounds like a corner one has worked oneself into in programming - maps being certain sizes and so on. c) well, I guess necessity is the mother of invention - if it's quick, I could give it a go in a small mod without endangering the wellbeing of a massive existing mod. I can code in C# when forced to, but I need to find a "hello world" display item code example, I think.