Oh thanks, I am unsure of his exact classification on colouring but he is a lavender/pinky color with a red head and is actually a butterfly ( has a fine white band around his caudal which the camera flash makes it impossible to see). Maybe his colour is Salamander? or maybe just lavender butterfly?
I bought him from a local petshop which changed hands, they never used to sell bettas so you can imagine that after a few years break from bettas I wandered into that store to find all sorts of unusual varieties that were only available in Thailand back when I had bettas that I was rather excited and came out with more fish than I had planned!