How Have Others Camouflaged The Wires From A Flat Screen Tv That Is Mounted On A Wall Bracket?
The simplest solution is to get a wire concealer like this one:
http://www.bestbuy.com/site/olspage.jsp?skuId=9058798&st=hide+wires&type=product&id=1218013802143
The surface is paintable, they are barely noticeable, and cheap.
go wireless
track the walls and replaster
paint them in when you paint the wall