There is a good example for displaying colors in this [link](https://github.com/GeoTIFF/georaster-layer-for-leaflet-example/blob/master/examples/color-scale.html) But in the example it is using a 1 band image and it is using index 0 of an array `var pixelValue = pixelValues[0]; // there's just one band in this raster` But what if my image is 4 bands?