The fourth film in the Shrek series is looking to be greener than ever - and it has nothing to do with the color of Shrek and Fiona's ogre skin. A trailer of Shrek Forever After shows Shrek on some kind of a time-warp journey where he finds his beloved swamp in ruins, both socially and environmentally. Could this be the main theme in the film?

In a 2007 interview, Mike Myer's co-star Cameron Diaz (Princess Fiona), said she would love for the fourth film to emphasize the importance of preserving their environment.

‘That’s something I’ve been on Jeffrey’s (producer Katzenberg) ear about, that the swamp possibly could be in danger,’ she said.

Julie Andrews, who voices the Fairy Godmother, agreed, asking “What better way to get a message across than with something that’s so funny?”

Would you like to see the latest Shrek film have a "green" theme?

via ecorazzi