this inspiration photo fits yr requirements re color.
Depending on yr room dimensions you might be able to reposition your new furniture to replicate the vision in this pic

here's another consideration might give you someideas to work with

How about this curtain treatment.

I like the blue peaking in from the bedroom, but I can't tell what the pattern of the window treatment is. lol I'm assuming you are keeping it. Consider adding a color in the form of a rug. I'm partial to stripes, kilims, and traditional oriental designs. But I'm thinking that stripe or kilim might be your taste based on some of your other choices. I'll post a few that might work. What's your budget?
http://www.potterybarn.com/products/dennis-stripe-recycled-yarn-outdoor-rug-blue/?cm_src=AutoRel
http://www.potterybarn.com/products/dennis-stripe-recycled-yarn-outdoor-rug-blue/?cm_src=AutoRel
http://www.ikea.com/us/en/catalog/products/10163789/#/60117115
http://www.target.com/p/safavieh-aram-area-rug/-/A-14548207#?lnk=sc_qi_detaillink
This one reminds me of your drapes but with more color:
http://www.westelm.com/products/cadiz-rug-red-t221/?pkey=cpattern-rugs-flooring&cm_src=pattern-rugs-flooring||NoFacet-_-NoFacet-_--_-
But I'm inclined to the stripes. Or maybe 2 of these in order to get the size you need:
http://www.westelm.com/products/fiesta-tile-printed-jute-rug-t515/?cm_src=AutoRel

It's just my instinct, but I envision a flat weave rug in your room. I especially like the Zanzibar pictured in this article:
https://www.houzz.com/magazine/guest-picks-top-20-flat-weave-rugs-stsetivw-vs~1647182

these are great, thanks! although I'm going to replace the drapes so really any color idea would work.