You have two choices for keeping your living room looking fresh: A. constantly update the decor by tripping out on acid—NOT recommended—or B. paint your living room white and get two video projectors.
Created by Mr. Beam:
"We created a unique physical 3D video-mapping experience by turing a white living room into a spacious 360° projection area.
This technique allowed us to take control of all colors, patterns and textures of the furniture, wallpapers and carpet. All done with 2 projectors."
Check out their site for more projects. Little information is available, but the group—located in the Netherlands—specializes in projection art and has snagged some big clients, such as H&M:
BTW, creating illusions with projectors is an idea that's been slowly creeping into the graffiti world for some time now. If you're interested, here's a cool project to get you started.