So... while I was browsing the internet yesterday looking for photos of foreign architecture (I don't remember why), I stumbled across the blog of an artist called John Lovett.
http://splashingpaintblog.com
Anyway, I'd never heard of him before, but as I scrolled through his blog searching for the particular photo that had appeared on Google, I was completely taken with some of his art. The rock arrangements inspired by the color wheel were definitely different, but I preferred his many paintings instead. While the artist referred to several of them as sketches (and some of them certainly are simplistic, but that's where the charm lies, too), they had a certain combination of detail followed by immediate vagueness. Parts were done in watercolor, sketched over in pencil, in some cases very rough and sketchy, but I still liked the look.
For some reason, the less professional something looks, the better I tend to like it. Sketchy is preferable to perfectly fleshed out. For me anyway. Most of the time.