There is a picture of a Jade vs Emerald scratcher under General Windstone/Photos of new and “camera shy” windstones, message #34 on page 1.
That thread was last updated on 11/18 so it is probably buried on the 2nd or 3rd page.
The Jade version is darker, with almost a turquoise green shade in it, the emerald version is a bright green.
Also, the peacock orientals come in light and dark. At least my adult oriental is a very dark almost navy blue, and my young oriental is a bright blue.