termcolors

#! /usr/bin/env python

import sys

# Display the colors available in a terminal.
#  given any argument, it'll display 256-color mode as well as 16-color mode.

# Programs like ls and vim use the first 16 colors of the 256-color palette.
# This was documented as 16-color mode, but actually anything over 8 fails.
if len(sys.argv) > 1:
    print("256-color mode:")
    for color in range(0, 256) :
        line = ""
        for i in range(0, 3) :
            line += "\033[38;5;%sm%03s\033[m" % (str(color), str(color))
        print(line)
    print()
    print("16-color mode (actually only 8):")
else:
    print("16-color mode (actually only 8): use -256 to usee more colors.")

colornames = [ "black", "red", "green", "yellow",
               "blue", "magenta", "cyan", "white" ]
print("    %14ss %14s %14ss" % ('normal', 'inverse', 'bright'))
for color in range(0, 8) :
    line = ""

    # Print the color in normal and inverse video:
    for prefix in [3, 4] :
        line += "\033[0;%s%dm%2d%2d%2d %-8s\033[m " % (prefix, color,
                                                       color, color, color,
                                                       colornames[color])
    # Also print the "bright" version of the color:
    for prefix in [3] :
        line += "\033[0;%s%d;1m%2d%2d%2d %-8s\033[m " % (prefix, color,
                                                         color, color, color,
                                                         colornames[color])
    print(line)