# colorise # https://stackoverflow.com/questions/1489183/colorized-ruby-output
class String
def black;          "\033[30m#{self}\033[0m" end
def red;            "\033[31m#{self}\033[0m" end
def green;          "\033[32m#{self}\033[0m" end
def brown;          "\033[33m#{self}\033[0m" end
def blue;           "\033[34m#{self}\033[0m" end
def magenta;        "\033[35m#{self}\033[0m" end
def cyan;           "\033[36m#{self}\033[0m" end
def gray;           "\033[37m#{self}\033[0m" end
def bg_black;       "\033[40m#{self}\033[0m" end
def bg_red;         "\033[41m#{self}\033[0m" end
def bg_green;       "\033[42m#{self}\033[0m" end
def bg_brown;       "\033[43m#{self}\033[0m" end
def bg_blue;        "\033[44m#{self}\033[0m" end
def bg_magenta;     "\033[45m#{self}\033[0m" end
def bg_cyan;        "\033[46m#{self}\033[0m" end
def bg_gray;        "\033[47m#{self}\033[0m" end
def bold;           "\033[1m#{self}\033[22m" end
def reverse_color;  "\033[7m#{self}\033[27m" end
end