Module Variations or Module Hilites are a facility to individually style each module within a position, without it being global. Code wise, this is achieved by adding a class into the module code which loads from the Module Class Suffix field in the Module Manager. The theme CSS then adjusts the styling to the prebuilt suffixes.
There is a single module hilite with Afterburner, that is _menu. It is available in the following positions:-
Enter an available suffix at Extensions → Module Manager → Module → Module Class Suffix