Consumer Reports checks out mood-changing bulbs
promise to last anywhere from 23 to 46 years. Consumer Reports checks out several that claim to improve your mood. Consumer Reports' light bulb lab is full of LED bulbs that can do lots of new tricks. For example, the bulb LIFX changes colors. This bulb is supposed to keep you awake and alert. And the Definitely Digital Good Night LED for $70 - says it improves your natural sleep because it emits less blue light than other LEDs.