Well you can get any card from any pack, but there do seems to be specific packs that seem to contain cards you'd normally find from those section IDs:
Blue:Yellowboze, Bluefill
Red: Pinkal, Oran, Skyly
Green: Purplenum, Redria
Black: Viridia, Greenil, Whitil
So for example, it's more likely I'll find a monkey kind bar/ black king bar from a black pack because whitill finds it. Or I'd more likely be able to get a Sealed J-Sword from a red pack, because skyly finds them.
Blue:Yellowboze, Bluefill
Red: Pinkal, Oran, Skyly
Green: Purplenum, Redria
Black: Viridia, Greenil, Whitil
So for example, it's more likely I'll find a monkey kind bar/ black king bar from a black pack because whitill finds it. Or I'd more likely be able to get a Sealed J-Sword from a red pack, because skyly finds them.