Here's a series of photos of my charcoal colored Variable Bush Viper (Atheris squamigera), one of my favorites in my collection. Normally, I go for the more colorful snakes, but this little guy was just too hot to resist. He's got that nasty Atheris attitude that I love, too. Enjoy
Contrary to what some may say, arboreal vipers do, in fact, drink from a water dish. I've actually witnessed every arboreal viper, boa, and python in my collection drink from a water bowl, at some point.