\defaultfontfeatures[MonaspaceKrypton-Light]
{
  Extension=.otf,
  UprightFont=MonaspaceKrypton-Light,
  ItalicFont=MonaspaceKrypton-LightItalic,
  BoldFont=MonaspaceKrypton-Medium,
  BoldItalicFont=MonaspaceKrypton-MediumItalic
}