I have not used the black paint on the inside of a coach yet, most likely because I have yet to customize one yet with interior lights. I did do it to my modified Ffarquhar Station because my interior LEDs glowed though the brown brick and I wanted passive light only to come from the windows.
Dis you use 3volt coin/button batteries in the red coaches?
Dis you use 3volt coin/button batteries in the red coaches?