Well decided to let the girls have a go at dyeing with food colouring.
A bit of a disaster as read the wrong lot of instructions that said to use the food colouring neat. Thought it looked a bit dark and like it needed diluting, but hey that was what the instructions said.
Well 3 days of washing and several vinegar baths and it stopped running but not quite what they had planned!!
Though like so many disasters I actually quite like them.
dd1's is a blue black with coloured highlights and dd2's is a deep dark rainbow.
Going to let them have another go tomorrow and will probably end up using these myself.