He drew the mushroom first, and when I received the drawing, only the red squiggles were visible.
The result is very harmonious, I think.
It appeared up the back of the January '10 edition of the art guide australia.
[Thanks to Nikki Wynnichuck for the hook ups!]
[note also that Jonas has the same image on his blog, and generally writes better than me - funny also that neither of us had a copy of the original, and have both scanned it from the magazine!]