/usr/lib/pinentry-curses --help

is printing an option

-c, --colors STRING Set custom colors for ncurses

would it please be possible to improve the help string by writing something like:

-c, --colors STRING Set custom comma delimited colors foreground,background,so(standout ?) color

It is not clear to me what so color is. I think it is standout (so) color but this is not documented as far as I can see.

#/u/home/stes/bin/pinentry -c "black,white,green" "$@"

pinentry-curses -c "white,black,white"

Finally is there a way please to set the -c option in the gpg-agent.conf file ?

What I currently do in my gpg-agent.conf file :

# pinentry-program /usr/local/bin/pinentry-color

where the pinentry-color script is :

#!/bin/sh
# -c foreground,background,so(standout ?)
#/usr/lib/pinentry-curses -c "black,white,green" "$@"