curs_color(3) on FreeBSD

The text 4460412c0273, as FreeBSD 2.1.7.1-RELEASE, FreeBSD 2.1.7-RELEASE, FreeBSD 2.1.5-RELEASE, FreeBSD 2.0.5-RELEASE shipped it.

ncurses color manipulation routines

curs_color(3) on FreeBSD now