# Some programs (e.g. `vim` and `ip`) and libraries (reportedly `ncurses`) look
# at `COLORFGBG` to select color scheme, but not all terminals set it (in fact,
# the only man page I've found that references it is `rxvt`). `15;0` means
# BrightWhite foreground, Black background.
export COLORFGBG="${COLORFGBG:-15;0}"