My favorite theme Noté 5 sur 5 étoiles
I can't use any of the colored, photo, darker, or lighter themes as they all make it too hard to read. This one is the best shade of grey, with just enough graphic to keep it from being plain, but not making it hard to read.
But why not go ahead and make the text as dark as the one with contrast by janspambox? It's easier to read.