The CSS files for SCLogin are located in the /media/sourcecoast/themes/sclogin directory. We provide the default and sourcecoast css files, but you are free to make your own theme as well.
If you want to make changes that will remain persistent after an upgrade of SCLogin, then we recommend making a template override for mod_sclogin and placing your theme css file here: /templates/<YOUR_JOOMLA_TEMPLATE>/html/mod_sclogin/themes/
For more detailed information/steps on how to set up your own theme for sclogin, please see our documentation here to get you started:
www.sourcecoast.com/sclogin/documentation/themes
If you're looking to change the buttons themselves, the images are located in the /media/sourcecoast/images/provider/<PROVIDER_NAME>/ directories. You can add your own images to those directories and then update your parameters in the SCLogin module and/or JFBConnect component configuration area to use your new images.
I hope this helps answer your question and can get you started, but please let me know if you need further help.
Thanks
-Melissa
Sclogin - CSS changes
