Production on Russell Crowe's upcoming Nottingham film has been postponed because of fears the leaves in Sherwood Forest will be the wrong colour. The Ridley Scott movie will see Crowe playing the Sheriff of Nottingham and Sienna Miller taking on the role of Maid Marion in a new take of the famous Robin Hood tale. But filming has been delayed with movie bosses citing the threat of an actors' strike this summer and "location problems" for the move. And it has been revealed that a major factor in the decision to move the shoot back until next year is that the leaves in the original area of woodland where the Robin Hood legend was born would have turned brown by the end of filming. A source tells British newspaper the Daily Express, "The thing about the leaves is absolutely true. It may sound silly but Sherwood Forest needs to be green - it's central to the plot. They could have filmed in the autumn, but the post-production team would have had to retouch every leaf and that alone would have blown the budget." The movie is now slated for a November 2009 release.