Sherm is right. OD inside the Turret, White in the hull, but the hull floor under the turret (fighting compartment) is also OD on combat TD's. The early ones used at Camp (now Fort) Hood sometimes had white floors, but those really showed up from the air if the sun was just right. IF you model it with the engine compartment open, the compartment was also white.
I've also seen some photos of M10's being rebuilt at Massey Harris in Racine with OD hull interiors. So, where am I going with this? I dunno. Just an FYI (For Your Information)
Ron
Ron