I am not sure what to make of the lights. May not be very
important. Tibetan book of the dead mention lights but I think may
not be directly related to what you saw.
After the appearance of the various psychical manifestations run
their
course, the lights of the six realms appear. Here, the soul can
choose the
next rebirth. These lights are not as bright as the dazzling
appearances
before, but this is just as important as the spirit can choose
its next rebirth.
According to Buddhism, everyone reincarnates unless they have
become
completely enlightened during the Bardo stage. Even enlightened
masters
choose to reincarnate, because they are Bodhisattvas who have vowed
to be
reborn until every being is saved (McLean 1999).
For each realm, there is a different colored light. The grey
smoky light
represents the hell realm, where anger is the dominant emotion. The
yellow
light represents the realm of the hungry ghosts, which is
characterized by
craving, and the green light is that of the animal realm. The blue
light is
that of the human realm. The red light is the realm of the assuras,
jealous
gods who are more powerful than humans; the white light is that of
the godly
realm, which is said to be heavenly, but is characterized by pride.
Although
it may seem more desirable to be reborn in the gods’ realm, it is
said that
the human realm is the best one, because here exists a mix of
pleasure and
suffering to make one’s consciousness strive to evolve (Dzogchen
Ponlop
2007: 211-217).