SmartMenu includes now a reserved word in "Personalized Theme" that is "PXToolsTheme" that assign a special css (with minus classes than default) to not became in conflict to the classes that could be defined in GeneXus Theme Classes.
This css file included is: sm-pxtools-theme.css
Here are the classes to customize colors of Smart Menu directly GeneXus Theme if you use the PXToolsTheme value property:
They are all GeneXus Custom Classes
If you want to customize another class of Smart Menu you must:
Copy the corresponding class and properties of sm-pxtools-theme.css that you want into GeneXus Theme Custom Classes.
Remove the class in sm-pxtools-theme.css.