Here is a fresh new idea for adding some interest to a wall. Wallter wall art is paintable, I recommend you spray paint it, but you can hand paint it too. Once it is painted the peel away is removed then the adhesive back is applied to the wall. It is available in several shape and sizes and you can paint them any colour you like!
In this guest room I painted the walls flurry CC-100 and hand painted the squares north sea CC-932 and Georgian brick HC-50. All colours are from Benjamin Moore.