Wall decals are a great alternative to wallpaper as they don’t damage your walls when they’re removed and you can change them the moment you get tired of your handiwork with little effort. While there are a lot of wall decals out there, it’s harder to find simple modular shapes that can create modern patterns like the Removable Wall Patterns from the Salt Lake City-based MUR. Currently the company sells triangles (hooray!) in a small and large size, each available in eight colors.
Use their gallery to figure out what pattern you want to go with and let your imagination go wild coming up with your very own color scheme.