Yes, I have done something very similar to this, in case it looks familiar to you. It started out as a different approach and demonstration for my watercolour class. It went through many interesting stages, and now it's done.
Not sure if I like it, but I do like it enough to show it to you.
I'm a member of Hobsons Bay Arts Society, who just launched their website 27th June 2010. Do go and have a look. [link]