Heheh. The clothes they wore were mostly burned, soaked rags and would
have revealed little. As for hair color... AIYAH, there's one hell of a
can of worms. Y'see, just what the heck is Ranma's hair color? Duh, red,
some will say. That's just a anime convention, others will confidently
assert; it's actually black. For that matter, is Ukyou's hair brown or
black? Shampoo's purple or merely  a bluish-black? If we go by vaunted
'realism', then EVERYONE's hair is black - just like practically everyone
else in that area of the world.

Ummm...maybe this is a stupid question, but doesn't some detail being in
the anime make it true for the series?

-Wandering Eyes