Forum Moderators: martinibuster
A site with a gray bar generally (but not always) means that the site is not indexed by Google, for whatever reasons. A site that Google is ignoring cannot harm you because Google isn't counting anything from it.
The gray bar doesn't mean a site is penalized. It could be the toolbar is glitching, which it seems to have been doing a lot of the past few weeks. Do the usual tests to see if the site is fully indexed before leaping to the conclusion that the site is banned.
If you have questions about Google's algorithm, you should post them in the Google forum. This forum is about the development of links.
Good luck.