Amber Waves of Pain

I`ve always wondered about this, cause my 52 has clear turn lenses and had clear bulbs when I acquired it. I decided to keep them clear cause it looks cooler:)
But I wondered if they had amber bulbs back then and that`s what was supposed to be in them by law.
I`ve owned cars later than 63 that had clear turn lenses but were required to have amber bulbs to comply? I`d guess.