Firefox 3.6 + TreeStyleTabs = ugly?

Using Firefox 3.6 and the amazing TreeStyleTabs? If you found that the fonts changed to a large size and look ugly, here’s a quick hack to fix it:
edit the userChrome.css file in your Firefox settings directory:
> Profiles > profilename > chrome
to contain the following:
tab {
font-family: Verdana !important;
font-weight: normal !important;
font-size: 8pt !important;