Color ramp for a topology

gistfile1.css

#troparevo_nikulino_1 [layer='points']{
   marker-fill:#FF3366;
   marker-width:8;
   marker-line-color:#000000;
   marker-line-width:1;
   marker-opacity:1;
   marker-line-opacity:1;
   marker-placement:point;
   marker-type:ellipse;
   marker-allow-overlap:true;
}
#troparevo_nikulino_1 [layer='topo']{
   polygon-fill:transparent;
   line-color:#D53E4F;
   line-width:2;
   line-opacity:1;
   [cars<1]{
   line-color:#F46D43;
   line-opacity: 0.95;
}
   [cars<0.9]{
   line-color:#FDAE61;
   line-opacity: 0.9;
}
   [cars<0.8]{
   line-color:#FEE08B;
   line-opacity: 0.85;
}
   [cars<0.7]{
   line-color:#FFFFBF;
   line-opacity: 0.8;
}
   [cars<0.6]{
   line-color:#E6F598;
   line-opacity: 0.75;
}
   [cars<0.5]{
   line-color:#ABDDA4;
   line-opacity: 0.7;
}
   [cars<0.4]{
   line-color:#66C2A5;
   line-opacity: 0.65;
}
   [cars<0.3]{
   line-color:#3288BD;
   line-opacity: 0.6;
}

}

#troparevo_nikulino_1::glow [layer='topo']{
   polygon-fill:transparent;
   line-color:#D53E4F;
   line-width:5;
   line-opacity:0.5;
   [cars<1]{
      line-color:#F46D43;
      [cars<0.9]{
         line-color:#FDAE61;
         line-opacity:0.4;
         line-width:8;
         [cars<0.8]{
            line-color:#FEE08B;
            [cars<0.7]{
               line-color:#FFFFBF;
               [cars<0.6]{
                  line-color:#E6F598;
                  line-opacity:0.3;
                  line-width:10;
                  [cars<0.5]{
                     line-color:#ABDDA4;
                     [cars<0.4]{
                        line-color:#66C2A5;
                        line-opacity:0.2;
                        line-width:25;
                        [cars<0.3]{
                           line-color:#3288BD;
                        }
                     }
                  }
               }
            }
         }
      }
   }

}