Philips. The company’s LivingColors lamp contains four LEDs: two red, one blue, and one green. Consumers can use a remote control to increase, reduce, brighten, or dim each color to create nearly unlimited color combinations, the manufacturer claims. The lamp, designed for interior use only, comes encased in either a transparent or black surround with a translucent power cable that connects to an adapter. A mini version also is available. The lamp will last eight to 10 years if used 1-1/2 hours a day, the manufacturer says. 800-555-0050. www.lighting.philips.com.