Looking a bit more into this dyeing business, I found a list of vegetables with the possible colors one can get from them. The method itself, was the same. So here:
Light Purple: small quantity of grape juice
Violet blue: red onions skins
Blue: Canned blueberries, red cabage, purple grape juice
Green: spinach, grass
Yellow: orange or lemon peels, carrot tops, ground cumin, ground tumeric
Brown: strong coffee
Orange: yellow onion skins
Pink: beets, cranberries
Red: lots of red onions skins
And then I found another list of possible dyers but not the colors one would get... so if you try them, tell us!
So there... if you know of anything else, we can add to the list!
Another interesting link from a website called Pioneer Thinking. There is a long list of plants and the colors you might get.
I suggest you check Jenny Dean' s website and books. She is a guru in natural dyeing and a very generous person. Wise and fun!