Ok, here is another site that isn't as clean as the first...This is for lops.
http://www.ephiny.net/index.php The color guides are in the left hand menu.
Each breed uses slightly different terminology, such as Castor/Chestnut/Agouti meaning the same thing for some breeds, for others agouti refers to any banded hair, and the color is indicated differently. That is some of the confusion.
I will try to define some of your list and then smarter people may have to correct me.
Agouti means that the hair is banded, and typically refers to the color of a wild rabbit, but can also be used to refer to to the genetic capacity to have banded hairs, which includes several types of colors, such as....
Chinchilla, which is an agouti with no red in it's coat, so the hairs are banded black/blue/gray/white, but no red/brown/yellow.
Ticking is when just the tips of some individual hairs are a lighter color, and varies in the amount of ticking according to breed/individual.
Shaded is when the rabbits extremities are darker, rather like a siamese cat, though not limited to brown and creme.
Tort is a brown rabbit with black(or gray) shading...kinda. That is what it looks like, anyway, I don't know if that is the proper definition.
Seal and Sable look alot alike to me, they are both dark brown, but I think Sable has shading, and Seal...maybe doesn't?
Pearl is a really hard one, I have seen it look either gray or creamy, someone else better explain that!
