With all the cool MP vehicles coming to the game after 2023, the ability to change the primary and secondary vehicle colors in the agency.xml file would be AWESOME. We can already set modkit liveries (which is a great feature) for these MP vehicles, so I SUPPOSE it wouldn't be that hard to add this feature in future LSPDFR updates. Unless there's already a way to do exactly that and I'm just clueless little soul.