LIFX makes [IMO] pretty great LED bulbs with controllable temperature. They don't require a central hub like Phillips Hue, and you can find them on sale right n

LIFX makes [IMO] pretty great LED bulbs with controllable temperature. They don't require a central hub like Phillips Hue, and you can find them on sale right now since the newer model is smaller and fits more fixtures. http://www.lifx.com/products/white-800?variant=933783339 http://www.lifx.com/products/white-800?variant=933783339 Still 20x+ the cost of a normal bulb, and the tech probably won't work in 5 years, but it works well enough as a dumb bulb once the temperature is set that even when they inevitably go out of business or get acquired and shut down by Google, it should still be the temperature you want.