The info found here:
http://www.nwnravenloft.com/world_religions.html"This is the dominant religion of Paridon. All members of the clergy are referred to as "celebrants of humanity." Most clergymembers are monks, while a few become clerics. Monks focus on releasing untapped potential, while clerics focus on releasing the spiritual power flowing from all humans. Clerics of the Divinity of Mankind are asthetics, and believe that deities are purely mythical fabrications of humans who are unprepared to accept their ascendancy. As can be guessed, only humans are allowed into the clergy. Nonhumans are seen as lesser beings. "
Seems to be incorrect, based on information from the Gazetteer (which I'm lead to believe is only semi-canon).
From the Gazetteer:
There is little coherent knowledge about the
Divinity of Mankind abroad. The name itself
sparks two common questions: "If you don't
believe in gods, why is your religion called
'Divinity of Mankind'?" and "What about
non-humans?"
The answer to the first question is that the
Celebrants do not deny the existence of gods
or denizens of the non-material planes, as
Lamordians do. Celebrants, however, study
gods as symbols, principles or evolved souls.
'Divinity' is a state of being, a stage of
growth attainable to humanity.
The second question often catches the
average Zherisian unawares. Due to
geographical and intellectual insularity, most
have had no reason to consider the reality of
non-humans, let alone their souls. Therefore
the common answer is that non-humans are
aberrations. When pressed most Celebrants
admit that the non-human state is inferior
and must progress to a human one.
So, specifically, they don't deny the existence of gods, but rather, don't think of them in the same way as others.
The garbs of mankind are wearable by both clerics and monks, using the colors white, and grey.
This is inaccurate, to the information in the Gazetteer, which, when it talks about colors at all, uses this:
They are considered
interdependent and co-equal, and are
illustrated with primary colours to
emphasize this point. These traditions are
known as the Apex of Intellect (alchemical/
yellow); the Apex of Intuition (clerical/
blue); and the Apex of Experience
(monastic/red). Officially, members of all
traditions are addressed by the honorific
Brother or Sister, and their title is Celebrant
of Humanity (i.e. Brother Man is a Celebrant
of Humanity). In casual conversation,
Celebrants often name their "rival" factions
as monks, clergy, or alchemists. It is useful
to note when primary and secondary colours
are used in sect names; they often reveal
their philosophical affiliations.
It would make more sense to have two separate items, since monks and clergy aren't the same, nor do they have the same focus, or identify by the same colors.
Monk novices dress in the colors of the order, to identify themselves and protect from harassment, as mentioned here:
Novices and low-ranking monks wear their
monastic garments to identify them and
guard them from harassment; they are also
assigned daylight hours and the safest
neighbourhoods. They talk to people, and
some will intervene in situations where it
seems warranted.
Elder monks dress in nondescript clothing:
The elders continue the walking meditation
but now walk at all hours in nondescript
clothing, losing themselves in the anonymity
of Humanity. Whether they choose to
involve themselves in events varies
according to their particular school of
thought.