I painted mine in parts. Made getting to the insides easier. Left the center console and harness out of one of them as well. Dreadnoughts can ride in these things after all.
All the metallics are painted black, with a silver drybrush. The color bits are my normal blue/bluewash technique I use across my army. I’m stopping at 3. While the gamer in me would like two more, from a practical POV, I have so much hate for building/painting those things it’s never going to happen.
They all open.