I’m by no means a laserologist but my layperson understanding is that laser colors are achieved through different means of generating the laser - using various gases etc. So a red or green laser have different properties. Now there may be a way to achieve colors optically and the light itself being consistent but from the bit I recall green ones took quite a bit more power to generate than red so I think would be hotter.

….or I’m WAYYYYY off. 🥸😜