Certain colormap gradients were renamed or removed between Surfer 15 and Surfer 16. Below is a table of the old names and the new names. If you don't see a specific colormap gradient in the list, this is because the name didn't change much or at all. The list is ordered as the colormap Presets list was organized in Surfer 15.

Old name		New name	Notes
Rainbow 3		Rainbow 7
Rainbow 4			Removed
Rainbow 5		Rainbow 10
Rainbow 6		Rainbow 4
Rainbow 7		Rainbow 8
Rainbow 8		Rainbow 5
RainbowLight		Rainbow 11
RainbowPastel		Rainbow 12
YellowHigh		Blue-RedOrangeYellow
Geology		Green-Red
Geology2		BlueGreen-OrangeRed
Gravity		Rainbow 16
Gravity2		Rainbow 17
Exploration2		Rainbow 14
Forecast			Removed
Soil		Rainbow 18
Bathymetry		Blue-White
Sea2		Blue-Green-Yellow
LandSea		Blue-BrownYellow
Land		Green-YellowPurple
Land2		Green-Brown
LandArid		GreenYellow-BrownPurple
Desert		Yellow-Brown
RedHot2		BrightYellow-Red
Heat		Yellow-Red
Spice2			Removed
Dirt		Browns	Reversed
Forest		Greens	Reversed
Blues1		Blues
Blues3			Removed
BlueRed1		BrightBlue-Red
BlueRed2		Blue-Red
PurpleOrange2		Purple-Orange
YellowJacket		Gray-Yellow

If the colormap gradient you want to use was removed, or you just prefer the old list of colormap gradients, see here: How Can I Get My Favorite Old Colormap Back Into Surfer?

Updated December 2, 2021