I've been supervising Aunty Biscuit sorting colour strands into heaps, at least she has been putting them in heaps and I've been remixing them.  The names can be confusing though.  Medium green ,dark green, emerald which is which? Blue, periwinkle errm? bright pink, medium pink thats a bit easier.  Its a good job Aunty Biscuit can sort it and its character building for her.