Philips Lighting on Monday unveiled its Philips Hue white ambiance connected light bulbs. Designed to feature more natural light, the bulbs can gradually brighten in the morning to help users wake up naturally, while at night they can dim to help ease users to sleep. They also deliver a color temperature range — from cool daylight to warm white — that can be adjusted via a connected dimmer switch or through an app on a smartphone or tablet. The bulbs can be programmed with routines throughout the day, the company said.