bathy_deep_pal          Bathymetry
chl_pal                 Ocean colour colours for chlorophyll-a.
col2hex                 Colour to hex conversion.
d_pal                   Colours for data values
dirty_pal               Bathymetry palette, absolute for global use
ice_pal                 Sea ice colours
image_hex               Convert image data to a matrix of hex colours
image_pal               Map data values to colours
mk_timePal              Time-indexed colour.
oisst                   Sea surface temperature (SST) and ocean color
                        chlorophyll-a (CHLA).
palr                    palr
sst_pal                 SST colours
stretch_linear          Stretch numeric values to [0, 1]
