oping(8): Document the colors used by noping.
oping(8): Document the colors used by noping.

barak/liboping,octo/liboping,iseki-masaya/liboping,octo/liboping,octo/liboping,iseki-masaya/liboping,barak/liboping,barak/liboping,iseki-masaya/liboping,octo/liboping,iseki-masaya/liboping