I gave it a go... spun up some thick and thin yarn (HA HA) it looked really cool.
I then dyed it with kool-aid. Berry and Grape.
Just waiting for it to dry, then I'm going to knit a really funky looking hat!
Above: some of the really dirty wool I've been washing, this lot has been washed 4 or 5 times already.
Above: My spinning adventure begins.
Above: two loads on the spindle, dyed with Kool-aid.
Hat knitted up on size 10 needles (CO 50)