I scanned those pages while doing a related project a long time back. I can upload all the purple Yoda panels if people really want to see them.
Bluemilk has it slightly wrong. The regular monthly issues had the redrawn Yoda, and the paperback had the purple, as it went to press early. (At least that what's I read about the whole thing back in the 80's.)
The Hasbro McQuarrie Concept Yoda figure is pretty close to that design, but is green.