Update: July 11, 2017: We've added a review of the Geeni Prisma 450 smart bulb to this collection. Smart color light bulbs—LED-based bulbs that can be controlled by a smartphone and “tuned” to emit any hue in the rainbow—are no longer a new idea. What is new is how far this technology has come since its advent just a few years ago. Also new: Products like the Nanoleaf Aurora that fundamentally change the light bulb concept. Aurora is a system of interlocking LED panels that let you decorate with light. You'll find our review here.