Nice mouldings, nice room. I like your speakers as well.
If it was my room, I'd be tempted to do the room in either a light or darker saturated green, the mouldings and trim in high gloss white, and the inside of the shelves either in another green (closely matched), or eggshell white.
Color may clash with your speakers but will go well with the stone work. And your speakers can be front and center.
Give it "pop" as the kids say.
Home Depot has good color combinations..
Or go to Chapters, look up a book called "Apartment Therapy" and read the section on colors... something like 80% either warm or cool, and the other 20% the opposite.
