Bold wallpaper and moody, saturated colors have been trending since the start of the pandemic—and they’re not going away anytime soon—but they can also make a room look, well, cavelike. But before you go down an If You Give A Mouse A Cookie-style path, deciding that darker paint means you need more lights, which means hiring an electrician, which means you’ve got to choose between your daughter’s braces and having nice things, pause. Try one of these strategic mirror-placement tricks instead.