Categorizing custom hair into the color bins

Here is a new SimPE plugin that lets you categorize your hair just like game hair:
http://www.modthesims2.com/showthread.php?c=1&p=1283102

Here is a tutorial about recategorizing hair into the color bins with DatGen, which is a bit tricky to follow:
http://www.modthesims2.com/showthread.php?t=127096

And another tutorial that does it by hand with SimPE only - with 4 custom grays instead of 1:
http://www.modthesims2.com/showthread.php?t=150742

And if your sim's eyebrows do not match their hair, here's how to fix that:
http://www.modthesims2.com/showthread.php?t=165931