Lawrence,
There's a few ways, depending on how your template is designed. Our module has a parameter called "Module Class Suffix". With that, you can add a string like "-fblogin". Then, in your template, you'd add:
.moduletable-fblogin, .moduletable-fblogin a {
color: #660000;
}If your template doesn't support the moduleclass suffix ability, then you'll need to determine the div the module is in, and create a specific style like above to target the module in that area.
Hope that helps get you started, but if you need anything else, just let us know,
Alex