Having stripped and replaced a few bits of kit.
Don't think all will be possibly used, but good practice painting any way.
Note holes, well wires stuck in this time following drilling, once dries I sprayed from underneath black Mr Hobby, nce that was done a coat of white Mr Hobby sprayed from the top down.
Going to leave these to fully harden and dry over night, then some very thin washes of uniform colours , pluss all the other shades of brown you can imagine.
JR