Grey.

I think they would look much better painted grey.

Artwork.

Ottomans with a colourful pattern or dark leather.

Artwork where? Not that wall?

Gray.

Turn the TV on?

If you really think you need color on that wall, you could replace the ottomans (assuming you use them for something) with ones that are a color. Not every wall needs to be a focal point, and that wall doesn't seem like the one where you want your eye to be drawn unless you're watching the TV.

voting for things mentioned above--grey panels, trim work around the closets and a small chest or console under the TV

I would case out the closets the paint them with your white trim color. Replace the ottomans with a small chest with a colorful vignette on top.

Yes, doors need casing (molding) around them, and the casing and doors would look good white...

Yes, casing and then paint all the trim and the doors white.

I think a tall narrow dresser would be perfect under the TV too rather than the little seats, if you have room

Check out the progress

Rachel, so much better with casing! Are you going to paint the doors the same white? I think that would look great! Then, get a tall, slim dresser that can fit under your TV for additional storage, or put the TV on taller dresser. Nice job!