From http://ab-initio.mit.edu/wiki/index.php/Color_tables_in_h5topng

autumn 		
        red-orange-yellow color map; based on colormap of the same name in Matlab
bluered 		
        blue-white-red colorbar, useful for signed data in conjunction with -Z option to make white=0
bone 		
        nearly grayscale (blackish to whitish) color map with a tinge of blue; based on colormap of the same name in Matlab, which suggests using it to add an "electronic" look to grayscale images
colorcube 		
        enhanced color-cube color map; based on colormap of the same name in Matlab, basically designed to fill the RGB color space with an emphasis on a few pure colors
cool 		
        cyan-magenta color map; based on colormap of the same name in Matlab
copper 		
        black-copper color map; based on colormap of the same name in Matlab
dkbluered 		
        dark blue-white-red colorbar, useful for signed data in conjunction with -Z option to make white=0; similar to bluered but shows a bit more dynamic range for the maxima/minima by darkening at the ends
flag 		
        alternating red/white/blue/black color map; based on colormap of the same name in Matlab
gray 		
        simple black-to-white grayscale color bar
green 		
        white-green color map; useful for translucent overlays with -A
hot 		
        black-red-yellow-white color map, useful for nonnegative "intensity" data — based on colormap of the same name in Matlab, loosely resembling the color of heated object at increasing temperatures
hsv 		
        red-yellow-green-cyan-blue-pink-magenta color map formed by changing the hue component in the HSV color space; based on colormap of the same name in Matlab, who recommend it for used in plotting periodic data (that is, in which the maximum magnitude and the minimum magnitude are equivalent)
jet 		
        blue-cyan-yellow-red color map (a variant of hsv; based on colormap of the same name in Matlab, who based it on a fluid-jet simulation by NCSA
lines 		
        oscillating color map; based on colormap of the same name in Matlab (based on the Matlab plot-line colors)
pink 		
        pastel black-pink-white color map; based on colormap of the same name in Matlab, used for Sepia tone colorization
prism 		
        repeating red-yellow-green-blue-purple-...-green color map; based on colormap of the same name in Matlab
spring 		
        magenta-yellow color map; based on colormap of the same name in Matlab
summer 		
        green-yellow color map; based on colormap of the same name in Matlab
vga 		
        Windows 4-bit color map; based on colormap of the same name in Matlab
winter 		
        blue-green color map; based on colormap of the same name in Matlab
yarg 		
        simple white-to-black grayscale color bar (the reverse of gray, and almost equivalent to using -gray or gray with -r); this is useful to make contour-like overlays with the -A option because its transparency scale (black is transparent) is the opposite of gray (white is transparent)
yellow 		
        white-yellow color map; useful for translucent overlays with -A