I made a blue merman a long while back (October 2017) and I have wanted to make more but kept being unsatisfied with my blue dyeing attempts. As I described here, I finally approached the dyeing in a more deliberate fashion, found actual color charts and recipes, and this time I got colors that I was happy with. Funny thing about that!
I am having fun with the merman hair- making exaggerated swoops.
I am having the best time with these colors.
A close-up of his hair-