How To Decorate A Light Gray Living Room . A dark grey sofa with light grey walls runs the risk of being ‘drab’ and too monochromatic. This ombre effect is taken to heart on this shelving, where graduating greys create an elegant design feature. 70 Light & Grey Living Room Colous Scheme Decor Ideas from www.pinterest.com.mx File this under masculine gray living room ideas with a twist. See more ideas about living room decor, living room inspiration, living room. Geometric patters will work well.