diff --git a/lib/torque/renderer/point.js b/lib/torque/renderer/point.js
index 369f0b8..b0787ab 100644
--- a/lib/torque/renderer/point.js
+++ b/lib/torque/renderer/point.js
@@ -405,7 +405,7 @@ var contour = require('./contour');
           ctx.globalAlpha = (contourValues[c]/max)*(style["-isoline-line-opacity"] || 0.8);
         }
         if(grad){
-          ctx.strokeStyle = grad[contourValues[c]];
+          ctx.strokeStyle = "rgb("+grad[4*contourValues[c]+1]+","+grad[4*contourValues[c]+2]+","+grad[4*contourValues[c]+3]+")";
         }
         for (var y = 0;  y < cellsY; y++) {
           for (var x = 0;  x < this.globalGrid[y].length-1; x++){