Gser, its needed for the colorization. The "program" is made for linux.
Yanak, thank you. What windows version do you have? Its a good page, but they have made a bit approvment after that page you liked to, they have an officiell online colorization
here, it is mutch better than colorize.dev.kaisou that uses the older trained file. Yes I wish it was easier, but to install the ubuntu terminal in windows isn't that hard and works great. It does work with cygwin also (works with older windows versions), but there is some other scripts like "sudo apt-get" does not work its something else for that command, its kind of hard to install. There is win-bash also, but I have not tried it. I don't know about Windows 7, it might have the option also with latest update to in "Windows Subsystem for Linux" I don't use 7, 8 or 8.1 so I can not check.