As it's been said -- it's a retarded sales gimmick, nothing more.

Now, there is very strong evidence it was a brew, so to speak, of acid -- this Purple Haze. I'll quote Jimi Hendrix's lyrics for this one.

Purple haze all in my brain
Lately things just don't seem the same
Actin' funny, but I don't know why
'Scuse me while I kiss the sky

Purple haze all around
Don't know if I'm comin' up or down
Am I happy or in misery?
Whatever it is, that girl put a spell on me

Purple haze all in my eyes
Don't know if it's day or night
You got me blowin', blowin' my mind
Is it tomorrow, or just the end of time?

See what I mean?

Acid.