Bought Action Comics #275, April, 1961, at the Emerald City Comicon. I'll let reporter Lois Lane fill you in on the effects of the poison cocktail of Red and Green K:
NOW I UNDERSTAND EVERYTHING! THAT RAY HAS AFFECTED HIS MIND SO THAT HE'S FORCED TO WEAR STRANGE HATS, AND DO HIS SUPER-JOBS ACCORDING TO THE WAY PEOPLE WHO WEAR THOSE HATS ACT!Well-put, Miss Lane... but hardly accurate. Do a little digging and you might learn that Superman is acting hat-crazy only to conceal the fantastic TRUE effect of Red and Green K!
Since my comic book and I were at the Comicon, I got Action Comics writer Gail Simone to read it. Cross your fingers; we may see more hat stories!