Fixes black lizardmen

Everyone whose mutant color is set to black is now instead white.

Also, now black mutantcolors are automatically set to the default color
of your species if you select them.
Fixes accidental parenthesis

I accidentally put that one in after I'd already compiled, and didn't
catch it until after I published.
OKAY WHOOPS I LIED

THIS corrects pre-existing black mutantcolors.
Merge pull request #3985 from CollenN/blackfix

Fixes Black Lizardmen