A short while back, I showed an example of how to use RGB Color Changing LED lights to add a splash of color to your backdrop (found here). It's a bit of a DIY, but supposedly you can choose 16 million colors as a backsplash controlled wirelessly by your iPhone.
These durable outdoor flood lights are available in various sizes. The one shown in the video is a smaller 20 watt model found for under $40 dollars, but if you need more light output, you can also find a 50 watt version via Amazon (click here).
RGB Outdoor Color Changing LED Light