Thanks Bethany, Constance, Earl and Delo. I think I got over excited and felt the urge to post too soon. Delo you are so right about reflected green in the shadows. and I should have worked on that already. In my defence the foliage came later and unexpectedly
I will be working on that. As for the number of colours, Zorn used ivory black for more than just darkening. It has a blue base which can produce subtle greens when mixed with yellow ochre. I think youre right about the Adam bit, I've fallen in love with her a bit myself!