as far as we know the same as outside ... there is evidence of the inside of some Schürzen plates beeing camo'ed as the outside is, such as the forwardmost plates on StuGs or Pz IVs.
Note that the inside of the turret schürzen doors were camo'ed as the outside was so that there'd be no discontinuity in the camo when the doors were opened.
Look at this one, turret and side Schürzen :
Cheers.
Laurent.
My current projects :
- StuG III G "late" (90%)
- StuG III g "Early" (99%)
- Pz IV H. (98%)
- Befehlspanther G "R01" (95%)
- Sherman M4A1 "Early" (99%)