We've found that the colors really shine brightest and clearest on a white wall behind the TV. A white wall will ensure that no other colors are mixing with the LED display, allowing for the best color matching accuracy.
I'm sorry for bumping this thread, but I have a salmon colored wall. I'd love to use DreamScreen, but painting the wall would be a step too far (especially for my girlfriend). Is there any way to (partly) correct a color inaccuracy?
The DreamScreen offers some RGB color correction settings in the app to account for different colored walls. You would simply have to play around with the RGB sliders in the Video Settings until you get a satisfactory color output.