As you know, there's no green nebula in the guidebook, and thus a discrepancy between the pages of green and other nebula pages.
...
I got annoyed and drew one.
Does it look okay? Would it be better than the current one on pages? It's by no means exactly the same as the other nebula images, but it's closer than the JCE one.
Obviously I can make changes to it if necessary - if you can see any immediate ways to improve it go ahead and say.