The available schemes are:
which=1 for a red-white-blue scheme.
which=2 for a red-yellow-blue scheme.
which=9.01, which="9A" or which="jet" for oceColorsJet(n).
which=9.02 or which="9B" for oceColors9B(n).
oceColorsPalette(n, which = 1)number of colors to create
integer or character string indicating the palette to use; see “Details”.
The following references provide information on choosing colour schemes, that are suitable for viewers who have colour deficiencies.
Light, Adam, and Patrick J. Bartlein. "The End of the Rainbow? Color Schemes for Improved Data Graphics." Eos, Transactions American Geophysical Union 85, no. 40 (2004): 385. DOI: 10.1029/2004EO400002
Stephenson, David B. "Comment on 'Color Schemes for Improved Data Graphics', by A Light and P.J. Bartlein." Eos, Transactions American Geophysical Union 86, no. 20 (2005): 196. DOI: 10.1029/2005EO200005
Light, Adam, and Patrick J. Bartlein. "Reply to 'Comment on Color Schemes for Improved Data Graphics,' by A. Light and P.J. Bartlein'." Eos, Transactions American Geophysical Union 86, no. 20 (2005): 196<U+2013>196. DOI: 10.1029/2005EO200006
Other things related to colors:
colormapGMT(),
colormap(),
oceColors9B(),
oceColorsCDOM(),
oceColorsChlorophyll(),
oceColorsClosure(),
oceColorsDensity(),
oceColorsFreesurface(),
oceColorsGebco(),
oceColorsJet(),
oceColorsOxygen(),
oceColorsPAR(),
oceColorsPhase(),
oceColorsSalinity(),
oceColorsTemperature(),
oceColorsTurbidity(),
oceColorsTurbo(),
oceColorsTwo(),
oceColorsVelocity(),
oceColorsViridis(),
oceColorsVorticity(),
ocecolors