Stormcloud Arctic Anaconda is a combination of the recessive sable mutation, the recessive axanthic mutation, the heterozygous incomplete dominant arctic mutation and the heterozygous incomplete dominant anaconda mutation. This combination hatches with a blue to grey colour and black/dark grey saddles. When stormclouds get older, some of the blue colour gets lost and the saddles often get more brown to black. The arctic mutation gives the saddles white to light grey outlines. The anaconda mutation removes some of the dorsal pattern.