Just a few from my own research:
Amaranthus
Asphodel Lily
Auricular
Capuchine
Dead Leaf
Drake's Neck
Indian Wood
London Smoke
Nakara
Ramoneur
Spanish Fly
Stone
Vigogne
These are just a few of the oddball colour names I've culled from the fashion periodicals 1798-1820....
Louisa
Wild Poppy