mypy coloring does not work on MacOS

[ssbarnea]

While coloring seems to work fine on Linux, it juet does not happen on MacOS.

I tried iterm and default terminal, same result. I doubt any environment variable affects the outcome because I did also run with env -i /path/to/mypy . and got the same result.

COLORTERM=truecolor
TERM=xterm-256color  # <-- clearly not affecting because same works on Linux

curses library is clearly available as import curses worked fine. Please advise which other tests should I do in order to narrow it down.