diff --git a/dist/image-sequencer.js b/dist/image-sequencer.js
index 3c6ef06d..b1d30aac 100644
--- a/dist/image-sequencer.js
+++ b/dist/image-sequencer.js
@@ -35424,14 +35424,15 @@ module.exports = function SegmentedColormap(options) {
 
   options = options || {};
   options.title = "Segmented Colormap";
-  var output
+  options.colormap = options.colormap || "default";
+  var output;
 
   function draw(input,callback) {
     this_ = this;
     function changePixel(r, g, b, a) {
-      var ndvi = (r - b) / (r + b);
+      var ndvi = (b - r) / (r + b);
       var normalized = (ndvi + 1) / 2;
-      var res = default_colormap(normalized);
+      var res = colormaps[options.colormap](normalized);
       return [res[0], res[1], res[2], 255];
     }
     function output(image,datauri,mimetype){
@@ -35461,6 +35462,13 @@ var stretched_colormap = segmented_colormap([[0, [0, 0, 255], [0, 0, 255]], [0.1
 
 var fastie_colormap = segmented_colormap([[0, [255, 255, 255], [0, 0, 0]], [0.167, [0, 0, 0], [255, 255, 255]], [0.33, [255, 255, 255], [0, 0, 0]], [0.5, [0, 0, 0], [140, 140, 255]], [0.55, [140, 140, 255], [0, 255, 0]], [0.63, [0, 255, 0], [255, 255, 0]], [0.75, [255, 255, 0], [255, 0, 0]], [0.95, [255, 0, 0], [255, 0, 255]]]);
 
+var colormaps = {
+  greyscale: greyscale_colormap,
+  default: default_colormap,
+  stretched: stretched_colormap,
+  fastie: fastie_colormap
+}
+
 function segmented_colormap(segments) {
   return function(x) {
     var i, result, x0, x1, xstart, y0, y1, _i, _j, _len, _ref, _ref1, _ref2, _ref3;
diff --git a/src/modules/SegmentedColormap.js b/src/modules/SegmentedColormap.js
index 1615f184..005a3cd2 100644
--- a/src/modules/SegmentedColormap.js
+++ b/src/modules/SegmentedColormap.js
@@ -2,14 +2,15 @@ module.exports = function SegmentedColormap(options) {
 
   options = options || {};
   options.title = "Segmented Colormap";
-  var output
+  options.colormap = options.colormap || "default";
+  var output;
 
   function draw(input,callback) {
     this_ = this;
     function changePixel(r, g, b, a) {
-      var ndvi = (r - b) / (r + b);
+      var ndvi = (b - r) / (r + b);
       var normalized = (ndvi + 1) / 2;
-      var res = default_colormap(normalized);
+      var res = colormaps[options.colormap](normalized);
       return [res[0], res[1], res[2], 255];
     }
     function output(image,datauri,mimetype){
@@ -39,6 +40,13 @@ var stretched_colormap = segmented_colormap([[0, [0, 0, 255], [0, 0, 255]], [0.1
 
 var fastie_colormap = segmented_colormap([[0, [255, 255, 255], [0, 0, 0]], [0.167, [0, 0, 0], [255, 255, 255]], [0.33, [255, 255, 255], [0, 0, 0]], [0.5, [0, 0, 0], [140, 140, 255]], [0.55, [140, 140, 255], [0, 255, 0]], [0.63, [0, 255, 0], [255, 255, 0]], [0.75, [255, 255, 0], [255, 0, 0]], [0.95, [255, 0, 0], [255, 0, 255]]]);
 
+var colormaps = {
+  greyscale: greyscale_colormap,
+  default: default_colormap,
+  stretched: stretched_colormap,
+  fastie: fastie_colormap
+}
+
 function segmented_colormap(segments) {
   return function(x) {
     var i, result, x0, x1, xstart, y0, y1, _i, _j, _len, _ref, _ref1, _ref2, _ref3;