No, this photo was not edited, it’s a teal Series 11 Scarecrow hat.
Is this a prototype? If not, which set did it come from? I tried googling it, but nothing came up.
If anyone has any clue about this, please tell me.
You should maybe consider looking for any authentication that it’s a real LEGO piece and as of now this color of the hat is not featured in the BL(Bricklink) Catalog.
My final conclusion that it’s a fake 'til I’m proven otherwise
Have a great day,
//Tarkur
#####Edit: a copyright mark can also confirm if this is a LEGO piece but finding LEGO somewhere on the piece is more trustwhorty