CartoDBtrackspermonth.css

/** choropleth visualization */

#bird_tracking{
  polygon-opacity: 0;
  line-color: #FFFFCC;
  line-width: 1.5;
  line-opacity: 0.8;
}

#bird_tracking::labels {
  text-name: [bird_name];
  text-face-name: 'Lato Bold';
  text-size: 12;
  text-label-position-tolerance: 10;
  text-fill: #000;
  text-halo-fill: #FFF;
  text-halo-radius: 2;
  text-dy: -10;
  text-allow-overlap: false;
  text-placement: line;
  text-placement-type: simple;
}

#bird_tracking [ month <= 12] {
   line-color: #253494;
}
#bird_tracking [ month <= 11] {
   line-color: #2C7FB8;
}
#bird_tracking [ month <= 10] {
   line-color: #41B6C4;
}
#bird_tracking [ month <= 9] {
   line-color: #A1DAB4;
}
#bird_tracking [ month <= 8] {
   line-color: #FFFFCC;
}