Draconomicon. Here is a quick summary from what I've learned over the years:
Originally Posted by Duboris
Black: Vicious and battle loving. Live in swamps. Prefer coins in their hoard.
Blue: proud and oddly lawful. Live in deserts. Collect ANYTHING.
Brass: love talking. Live in deserts. Collects organic items (worked wood, paintings...)
Bronze: Curious and love justice. Islands and coasts. Love things from the sea.
Copper: pranksters. Live in mountains. Love things from the earth and jokes.
Gold: uber-paladins. Live in hard to reach places. Love high quality art.
Green: Politicians. Live on cliffs. Love trophies and valuables.
Red: Extreme greed. Live around mountains. Anything that kind of has value.
Silver: lesser paladins. Mountains or with people. Jewelry.
White: Pure hunters. Anywhere cold. Shiny things