I found this MJ bag , but I'm not sure about its authenticity. It's from designerimports.com ($499) and can also be found at ecrater.com for $420. Both sites guarantee authenticity but who knows...
I have always loved anything Prada does in green. Even their standard microfiber bags in green are always really rich and pretty.
a good back-up is also Kate Spade. I'm picturing the bags that are plain but what was the fabric? satin? remember, everyone had one? that was also a nice green color.