How to get rid of border style on fan box?

The border color was something that Facebook recently added as a parameter. There's currently no way to hide it, but you can configure it so that it's the same color as your background behind the module, making it effectively invisible. In the upcoming 4.0 release, this will be a configurable parameter, but until then, you'll need to make a minor modification to force the color to whatever you want.

In the /plugins/system/jfbcsystem/jfbcsystem.php file, around line 575, you'll see the line below. Add the border_color=#FF0000 parameter you see here:
Hope that helps, but if you run into other issues or have other questions, just let us know!
Alex

Teresa,
Sorry for the delayed response on this. We've been investigating what's going on, and unfortunately, don't have great news to report. The border color looks to have a bug where, if the header, stream, and faces are disabled, the border color parameter is simply ignored. We tested with your page and some others all with the same result. Additionally, if you try Facebook's configuration tool below, you'll see that if you set the border color and then start unchecking boxes, it will simply stop working.

We'll file this as a bug with Facebook (if it hasn't already been), but this likely won't be flagged as a critical problem.. which means it may take weeks or even months to be fixed.

Sorry for the inconvenience. If it helps, I actually think it looks pretty good on the site you linked too as there are other elements with the light gray color I see. It could be much worse

Good luck, and let us know if you have any other questions or issues,
Alex

Realized I didn't paste the link to the configuration tool from Facebook:
developers.facebook.com/docs/reference/plugins/like-box/