Slime people can now cosmetically change their color with slime cores!

This should help prevent xenobio from turning into a monotonous parade of blue identical looking slimefolk late round.
Each core used pushes you 60% towards that core's color, so you can mix varying cores for unique colors or repeatedly use the same core to get a strong single color.
Makes use of r_hair/b_hair/g_hair to set the color, the slime person sprite has been recolored to basically have it function as a full body hairpiece.
Taste the completely cosmetic rainbow!
http://i.imgur.com/WaK4EKn.png