In 2010 we ran a long-term art competition where users were asked to imagine that Green Monkey Dreams was going into reprint, and a new cover needed to be designed for the release. For more details see this page: A Redesign of Green Monkey Dreams.
It's now down to members of the site to vote for which cover they like best. Voting is open until the 31st January 2011. To view the entries, go to the Redesign of Green Monkey Dreams Gallery.