Reddit mentions of Venus Ribbon 1-Inch Geometric Argyle Jacquard, 5 Yards, Black/Pink Multi

Sknightx would LOVE pink & black argyle! This is not a joke. =)

Let's change out those curtains!

Might I suggest an argyle pattern that you love for your curtains! Amazon has a selection that could help tie various room colors together, or there's this one in your favorite pink & black colors! This would also save you the work of painting argyle! =)

As for wall colors, the lightest shade should go opposite your window(s) for best lighting, and I'd go with a nearly-white shade of that lightest pink (or grey) and either the charcoal or raspberry color below an imaginary chair-rail over which you can glue this pink and black argyle ribbon to create a chair-rail look. Having a dark color only on the lower ~1/3 of a wall would keep the room from being too dark as well. =)

Alternately, the same super pale grey on the wall with this pink argyle wall sticker -- then you get some simple picture-frame trim from Home Depot (they'll even mitre it for you), paint it black (or that dark charcoal) and tack it up around the decal to make it look like a giant piece of artwork!

Oh, and this. =)