color_demo.py

#!/usr/bin/env python

# print grid of all colors and brightnesses
# uses stdout.write to write chars with no newline nor spaces between them
# This should run more-or-less identically on Windows and Unix.
from __future__ import print_function
import sys
from colorama import init, Fore, Back, Style

init()

# Fore, Back and Style are convenience classes for the constant ANSI strings that set 
#     the foreground, background and style. The don't have any magic of their own.
FORES = [ Fore.BLACK, Fore.RED, Fore.GREEN, Fore.YELLOW, Fore.BLUE, Fore.MAGENTA, Fore.CYAN, Fore.WHITE ]
BACKS = [ Back.BLACK, Back.RED, Back.GREEN, Back.YELLOW, Back.BLUE, Back.MAGENTA, Back.CYAN, Back.WHITE ]
STYLES = [ Style.DIM, Style.NORMAL, Style.BRIGHT ]

NAMES = {
    Fore.BLACK: 'black', Fore.RED: 'red', Fore.GREEN: 'green', Fore.YELLOW: 'yellow', Fore.BLUE: 'blue', Fore.MAGENTA: 'magenta', Fore.CYAN: 'cyan', Fore.WHITE: 'white'
    , Fore.RESET: 'reset',
    Back.BLACK: 'black', Back.RED: 'red', Back.GREEN: 'green', Back.YELLOW: 'yellow', Back.BLUE: 'blue', Back.MAGENTA: 'magenta', Back.CYAN: 'cyan', Back.WHITE: 'white',
    Back.RESET: 'reset'
}

# show the color names
sys.stdout.write('        ')
for foreground in FORES:
    sys.stdout.write('%s%-7s' % (foreground, NAMES[foreground]))
print()

# make a row for each background color
for background in BACKS:
    sys.stdout.write('%s%-7s%s %s' % (background, NAMES[background], Back.RESET, background))
    # make a column for each foreground color
    for foreground in FORES:
        sys.stdout.write(foreground)
        # show dim, normal bright
        for brightness in STYLES:
            sys.stdout.write('%sX ' % brightness)
        sys.stdout.write(Style.RESET_ALL + ' ' + background)
    print(Style.RESET_ALL)

print()