[Feature] Make the hair color field a multi-value field about stash-box

[echo6ix]

Additionally,

• Add more basic hair color values
• Modify the spelling of some existing hair colors to be gender neutral
• Sort fixed list of hair colors alphabetically

List of new recommended hair colors (these would cover basic synthetic hair colors, excluding white):

Hair color
Blue
Green
Purple
White

List of existing hair colors and their modifications:

Hair color	New value
Blonde	Blond
Brunette	Brown
Various	Multicolor

I think this covers the fundamental basic and artificial hair pigments without getting into all the variations. The only basic color I omitted was Vibrant Red (or a better term for an artificial red pigment) to differentiate from a natural red pigment. But I'm not sure anyone cares about that level of detail.

[sleetx]

I think "Various" is a better descriptor than "Multicolor"... "Various" indicates that the performer has used multiple hair colors during their career. "Multicolor" to me just indicates some sort of rainbow dye.

For artificial colors, what about a generic "Neon" color instead of listing out every possible option (green, blue, pink, purple, etc)?