I’m thinking of dying a jumper I have. It’s a lovely 100% wool jumper, soft and snuggly but I don’t wear it as the colour isn't the best me. I’m at the point where I’ve nothing to lose, any tips? Best brands? I’ll do a hand wash dye, not machine, as I don’t want it to shrink or anything. Thinking of a dark colour - navy or black. It’s currently a camel colour.