"UV Light Ultraviolet and UV lamp" is a simulator of ultraviolet Light. The app let you change and select different color that you want (different Deep Colors variations), When you want the screen will be active and the brightness of your screen as well. All the colors in "UV Light lamp, Ultraviolet light simulator, UV and party lights" are optimized to show a powerful radiant effect. "UV Light Simulator:UV lamp" is only for fun & not intended for producing real ultraviolet Light, UV Light Ultraviolet and party lights just mimics the color of a UV Light enjoy and have a great time with fun.