Buffalo Carto with Compositing

style.mss

Map {
  background-color: #403958;
}

#countries {
  ::outline {
    line-color: #5f6074;
    line-width: 1;
    line-join: round;
    line-comp-op:multiply;
  }
  polygon-fill: #d7cebf;
}

#ss[ADMIN='South Sudan'] {
  ::glow {
    polygon-fill:white;
    image-filters:agg-stack-blur(900,900);
  }
  ::shape {
    polygon-fill:#a07c62;
    line-color:#5f6074;
    line-width:2;
    line-comp-op:screen;
    text-name:'[ADMIN]';
    text-size:30;
    text-transform:uppercase;
    text-fill:#d7cebf;
    text-character-spacing:2;
    text-wrap-width:40;
    text-line-spacing:5;
    text-face-name:'Chaparral Pro Regular';
  }
}