http://www.azcentral.com/offbeat/articles/0607greenblood-ON.html
To understand why this is on my migraine blog, you have to read down to the last sentence. Apparently the poor fellow has been overdosing on Imitrex!
How cool is this? I want green blood! Except I’d like mine to be a nice pretty emerald green, please.
In all seriousness, though, I wish I could find an article about this which says how much is too much.
Migraine aura picture from 
