The only green one I know is the Verdigris toadstool.
JD, saying that... they do look a little like Verdigris agaric.
Yeah, it's the only green 'shroom I know of.
The description of them says they are covered in a slime though, these weren't... they were dry... and id still say they were blue.
The only green one I know is the Verdigris toadstool. Certainly looks like it.