You can use the above link to see that our main site, foxytechnology.com, indeed passes the webmaster tool test and shows a star rating.
It does take a little bit for google to "figure out" that the stars are there, however, so it might take some time for them to display. Also, Google is constantly changing how they interpret and process search results, so we are also having to constantly shift the way in which we code in the "meta data" (figuratively, not literally, as of course google does not use metadata anymore) so that Google can best pick up on it.
Try our plugin out, and let us know if you have any problems with it. It should do everything you want it to, and we are constantly working to improve it, and improve its compatibility and dialogue with search engines!
Also, the star colors are fixed for the moment because they are actually text characters and we didn't want the color to clash with any themes we might not be aware of! A color customizer is definitely in the works :)