def enable_color():
    """Enable colors by setting colour code constants to ANSI color codes."""
    global LIGHT_GREEN
    LIGHT_GREEN = '\x1b[1;32m'
    global LIGHT_RED
    LIGHT_RED = '\x1b[1;31m'
    global LIGHT_BLUE
    LIGHT_BLUE = '\x1b[1;34m'
    global DARK_RED
    DARK_RED = '\x1b[0;31m'
    global END_COLOR
    END_COLOR = '\x1b[0m'
