I have these in our kitchen and breakfast nook.  In the kitchen the wall is a darker blue and it looks fabulous.  In the breakfast nook the color is a mid-tone grey and they dont pop, so I wouldnt recommend them for lighter colored walls.  But I do like them.  My main issue is that I had to use 2 panels in the breakfast nook (above a sliding door) and the panels are 2 different lengths.  Noticably so (see picture), so that calls in questions about the craftmanship to me.