Grey Bush

uuuuuuhhhhh ya still up, having a hard time gettin to sleep.  The thing that i'm most concerned about at the moment is grey hair.  I know its inevitable, but its killing me waiting for one to pop up.  Arnt you supposed to have a few by the time your 28?  Dosent hair when it turns grey become coarse, like pubic hair?  Im just sick of waiting, I wanna know what to what to expect, so I have sufficient time to prepare for my pube head and at least try to disguise it.