I have an order for a plaid cake but the client doesn't want fondant, insists on buttercream. Has anyone done this? How?

Check out my tutorial on spraying a plaid on buttercream with an airbrush.
http://community.webshots.com/user/abbyniemeier and check out the first album. If you click on each picture in the album the directions are listed before it. [/url]

Thanks, that was my plan but I wondered if it would work well.

Here's a plaid cake with a litte variation on the depth of color sprayed on the stripes.
http://home-and-garden.webshots.com/photo/2503719200048684272DpgGZu