Yeah, I grew up with these guys and can testify to a pretty wide range of colors. I am slightly confused by the blackberry reference, but will assume it involved autocomplete (which, self-referentially, my phone detected about midway through; unlike “self-referentially”, to which it objected vehemently). You would normally be able to make out a zigzag pattern, though.Interesting thing I've learnt from a local today during a countryside walk. We encountered a black small snake sleeping by the road. It turns out that Scandinavian adders can be blackberry sometimes - an adaptation to better absorb light! Still part of the population preserves the lighter colouring, because it's less visible to predators. Short warm life or long and chilly?