There are tons of web browsers in the world today, not counting the big three or four. Each has their own unique aspect but most of them congregate towards offering simple and minimalist interfaces. Vivaldi, from Opera co-founder Jon von Tetzchner, is, in that sense, a breed apart. It is unabashedly marketed at power users and stacks feature upon feature that would probably overwhelm everyone else. And its latest is probably as strange as it gets. As of version 1.5, Vivaldi claims to be the first web browser to have built-in support for controlling color-changing Philips Hue bulbs.