What if I need to display color in a 4band file

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?

Start with examples/color-scale.html and the linked color-display example, then inspect how pixelValues is read for the single-band case. Clarify the intended mapping for a four-band raster and define the expected displayed result before changing the example or adding coverage.

Written by the indexing model from the issue text.