Honestly, what motivated me most to get a droid was the thought of being able to paint and weather them so easily. Droid Depot didn’t offer a black R6 head, so I masked mine off and spray painted most of the white parts black (Plus the top half of my droid controller too.)
Later, my partner and I had a droid painting n’ weathering date night, using Liquitex Acrylics to add dirt and rust effects to our droids. My R6 color palette is Smuggler Faction themed, while his is themed to his VW GTI. Hah!
For those wanting to learn more about weathering techniques, Make has a great article to help you get started: Simple Paint Weathering in 3 Easy Steps