Bentwood Thonet-inspired cafe chairs seem to be everywhere I look. From Domino to Living Etc magazines, to Holly's good suggestion of a yellow one on decor8, to a flickr bentwood rocker from nomm de photo and finally to Ikea's Ölga for just $30. At that price, you can buy a bunch and paint them any color you like.
I had picked up all four of mine on craigslist for $25, but only as what I thought to be 'interim' chairs until I found my tulips! But now, I'm seeing their potential everywhere and will keep them as extra seating. I like the kind of French Bohemian, seventies vibe they have going on, now that I have been shown the light.
Bentwood door handle photo from Monceau.