White is definitely safe. Clean. Without knowing what your furniture style is it is hard to say whether to stain or not. You can't go wrong with white.

Sorry, if you did stain, I would stain close to floor color

Is the outside of your house white and shutters black?

HI -- What ever anything else is the doors would look good being very dark walnut or Ebony stain or painted black on the inside . It doesn't matter what is on the outside or what color the shutters are on the outside , it has nothing to do with the inside .

It is hard to see, but what is on the doors now. It looks to me like you don't have to do anything since it appears that in it's current state it will match the floors.