Feature req: Single colour Livery. Custom Liveries in own tab. Update thumbnails

I'd like the option to have a single colour Livery (and not have to find one that has all the same paint types to set them to the same colour). For the game to also save any modified liveries as "custom" in their own tab, and when modifying a livery to automatically set that to the car when saved sp we don't have to go searching through all of them to try and find it again... Would also be nice if the set livery is updated in the cars thumbnail, like in the Dirt games, and other racing titles