Depends on what the overall look/feel of the room to be! You could go Americana with reds, blues, bandana, and geometrics like stars. Or, you could go 50's with a fun graphic like red cherries and black trim. Or, you could easily go country with dusty colors and lush florals. If it were me? I'd go for a modern urban look, as that's what my whole house looks like, and stick with greys, creams, graphits, blue-greys, and a bit of chocolate brown to make it pop. I'd also consider adding a bit of velvet or dupioni to make it a little more luxurious feeling.