Reading scribu's site it says,
If you go to an URL like ?genre=jazz&instrument=guitar+piano, the page title that WP serves looks like this...
How can I query multiple terms like guitar+piano? I have a taxonomy named 'color' with the terms, 'red' 'blue' and 'green'. When I go to the url,
http://www.site.com/?color=blue+green I get a blank page.