With Diffuser [bhphotovideo.com] $ 229.95

Specs:
Variable 3000-10,000K Color Temperature
Adjustable Full Color Light
Discreet Dimming and Color Knobs
100 to 0% Brightness Dimming
Flicker-Free Lighting Unit
Color and Light Effects Sampling
Animated Light Effects via iOS App
Link Multiple Viola Units via Bluetooth