Anna,
I've grown Spellbinder for a while also, and it does appear to look the same as yours. Here is a picture I took of it last week:
If you look down into the throat very early in the day, it is green, but it is a very small throat compared to what we expect to see as a 'green throat' by today's descriptions (as Ken explained above).
There was a thread earlier this spring about using the buds' shape/coloring/uniqueness to help identify a cultivar. I *think* Buttered Popcorn's buds may have a dark tint on the ends of them just before they open. Perhaps this will help you distinguish which one you have...there are many people on this forum that grow BP, maybe someone can take a peek at the buds on it to confirm or deny
Please note: I have a clump of what may be BP, but I can't be sure due to not keeping up with tags when I first began with daylilies. So...my helpful hint above is based on what could be a faulty memory
