anchor.diff:                    width: double.infinity,
                     height: 45,
                     child: FlatButton(
  -                      color: staffSelected ? ColorPrimary : darkButtonColor,
  -                      textColor: staffSelected ? darkButtonColor : ColorPrimary,
  +                      color: staffSelected ? darkButtonColor : ColorPrimary,
  +                      textColor: staffSelected ? ColorPrimary : darkButtonColor,
                         shape: ContinuousRectangleBorder(
                             side: BorderSide(
                                 color: darkButtonColor,
  
positive.code:                     width: double.infinity,
                      height: 50,
                      child: FlatButton(
                          color: ColorPrimary,
                          disabledColor: ColorPrimary,
                          disabledTextColor: Colors.grey,
                          textColor: darkButtonColor ,
                          shape: ContinuousRectangleBorder(
                              side: BorderSide(
                                  color: darkButtonColor,
  
negative.code:                   width: double.infinity,
                    height: 45,
                    child: FlatButton(
                        color: visitorSelected ? darkButtonColor : ColorPrimary,
                        textColor: visitorSelected ? ColorPrimary : darkButtonColor,
                        shape: ContinuousRectangleBorder(
                            side: BorderSide(
                                color: darkButtonColor,
  