I'm not going to lie, this could be a tricky trade. Most people that have red have the blue/red GT and green would look pretty rough on the blue base color. You never know though, someone may want to make this trade but it's definitely not one of the easier ones.
Here is the official Clone parts swap thread. You should post this in there and also browse the thread to see if anyone's posted a trade you're interested in.
http://www.pbnation.com/showthread.php?t=3230709