Green is easy. Purple and blue are evading me.
This is the result of purple and blue pansy flower petals using the ice-flower dyeing method from Eco Colour. In the book, India Flint describes using black violas to obtain shades of blue. I guess my purples weren't dark enough to be considered black. Or maybe the yellow splotches on some of the petals are responsible for the green.
Even so, I'm happy with these lovely shades of green -- strips of silk organza, linen, cotton and wool -- but I'll definitely try again for blue using only the darkest petals.