Which LEGO AT-RT is this?
A quick search found these two video's of AT-RT's in green

https://www.youtube.com/watch?v=c0sFAreiaPc

and 

https://www.youtube.com/watch?v=Cbc_k_GwfRw

this AT-RT is also very nice and greenish (no video)

https://www.flickr.com/photos/legoarts/4917477074/in/photostream/