256 colours support in ncurses?

[rubyFeedback]

This article describes 256 colours for ncurses:

https://reversed.top/2019-02-05/more-than-256-curses-color-pairs/

The third and last piece is that most of curses examples you’ll find are using old API and there
seems to be no (at least easy to find) documentation on how to transition to the new one.

There are applications which use new API, it’s just documentation that didn’t really caught up.

Could the README mention whether this is supported or possible in the ruby-ncurses wrapper?

[shugo]

I've added the limitation to README. Thank you.