No it is not. I have been through the FAQ. That’s why I come here to get more specific information.
I’m assuming you mean this.
“I want to modify some of the styles in the calendar. View your site using Firefox browser with Firebug plugin activated. Read about using Firebug and learn how to “inspect” specific page elements for styling. Once you have settled on the look you want, add the overriding style to your theme’s css not the custom.css file (the custom.css file is not preserved when the plugin is updated). Confirm your changes with Firebug, it’s an invaluable tool for web design.”
That is not an appropriate answer.
Or this?
“How can I change current day background and font color? Add the .fc-state-highlight class to your theme stylesheet and apply the desired color rules.”
That is also not an appropriate answer.
So no, this particular issue is NOT covered in the FAQ.