Well if you want a warm look the easiest thing is to go with a warm color. The seagreen (i think) you have in there is a cool color, and while it is a nice complement to the tones you have going on, it is inherently not warm. Pretty much any warm neutral will do the trick and still play nice with what you already have going on in the room. A taupe, warm beige, warm cream -- just be sure the undertones don't lean on the cool side of the spectrum (so if you go with a grey make sure its a warm grey not a cool grey, etc).

While I tend to not recommend painting a room based on a drapery or valence fabric (as that stuff tends to be more easily changeable than a paint color) you do have some yellows, oranges, reds, in your valence that if you muted way down and desaturated could also be nice.

I would paint the walls a warm and cheery yellow. :-)