Man pages matching name default_colors in section 3ncurses:

default_colors.3ncurses.en	debian 10 / ncurses-doc
default_colors.3ncurses.en	debian 11 / ncurses-doc
default_colors.3ncurses.en	debian 12 / ncurses-doc
default_colors.3ncurses.en	debian 13 / ncurses-doc