Small Colormaps (less than 30 colors)

so4_23 ncolors = 25	gui_default ncolors = 24	so4_21 ncolors = 23	amwg ncolors = 18	wgne15 ncolors = 17
cosam12 ncolors = 14	cosam ncolors = 12	nrl_sirkes ncolors = 23	cyclic ncolors = 8	gscyclic ncolors = 8