I mixed blue and orchid. On fabric, it makes a lovely, mottled blue violet.
I saw a hand-dyed tee shirt done in a lovely, pale peach. I am trying to duplicate that peach. I used red and yellow, used less dye, and left the crochet thread in the dye only for an hour. I got a more orange peach than I wanted.
The blue and orchid thread part-way wound into a ball. I'm going to like how this one crochets up.
I've also been reading bout using fancy thread in the bobbin of the machine and doing upside down machine quilting. I wonder how the crochet thread would work in the bobbin. Perhaps with a purple metallic for the top thread to give it a touch of sparkle.