Mummy, how do I make tortoise?

Tabitha came home from pre-school today and decided she wanted to do some painting. I could hear a little voice coming from the other room "Mummy, how do I make tortoise?". She meant to say "turquoise". This was a big challenge for Mummy and one which proved very difficult to achieve. This caused Tabi to get very upset indeed. I didn't get out to blip today so have photographed the center of our household comotion.