would you consider some track lighting to cross the wall?
you could angle some heads up and some down or shine into the room?

if not check out this half-bowl white fixture==

http://www.lightinguniverse.com/wall-sconces/whitfield-lighting-eswl6553-energy-star-wall-sconce_g1043160.html?isku=7957499&linkloc=cataLogProductItemsImage

energy star rated but it will mainly wash the upper wall and 12 ft tall--you won't get anything close to the floor...

this is more specific style --contemporary--
http://www.lightinguniverse.com/wall-sconces/murray-feiss-wb1220orb-boulevard-wall-sconce_g148713.html?isku=838617&linkloc=cataLogProductItemsImage

that site is pretty easy to search--by type/size/price--

don't know what metal/color you might have going on in your room but take it from someone who just bought a house and the owners had multiple typs of lighting w/different metal finishes and styles
very offputting and just a terrible waste of their money IMO--
because if they had had a plan they could have done it in stages and still had it coordinated...