coming to BeamNG monster truck group near you soon. once i can figure out the textures for the bodies
Do you mean something like that ? https://www.beamng.com/resources/monster-pack-offroad-grand-marshal-and-200bx.2000/ Or something less "extreme" ?
I don't know anything about modding, but is it possible that you could make something like RGB lightning that changes colours / pulsates? (From LinusTechTips I have gotten an impression that RGB lightning improves performance of everything you strap it on to by about 50%)