Quote Originally Posted by Harrison
A not so nice looking alternative would be to just run a single length of plastic conduit down the wall. You would be able to see it, but it would hide the cables.
Seconding this, it's the only thing that'll do the trick. They exist in various sizes, so won't necessarily be that ugly. Any place that stock all kinds of building material will have them, or you could go straight to an electrician's outlet.