Color options for addGeoRaster and addGeotiff

Usage

colorOptions(
  palette = NULL,
  breaks = NULL,
  domain = NULL,
  na.color = "#bebebe22"
)

palette: the color palette to use. Can be a set of colors or a color generating function such as the result of colorRampPalette.
breaks: the breaks at which color should change.
domain: the value domain (min/max) within which color mapping should occur.
na.color: color for NA values (will map to NaN in Javascript).