Are you asking about the Missile Tube hatch interior? If so, ours were painted white. There was an orange cover to the tube itself that was visible when the hatch was raised, so, even with the hatch raised, it was rare to see inside the tube. The exterior to the tubes inside the Missile Compartment were covered in an olive green asbestos insulation material in the older boats, but were various shades of orange in newer ones. I'm not sure about Soviet/Russian boats.
Bill