where can I locate some that old fashion different color kernal popcorn from the 1950's.?

Check out Vermont Country Store's website and/or catalogue.....I've found tons of favorites from my childhood days such as Charlie's Chips ( I remember the chip truck comming to our house on Saturdays!), Greek Goddess dressing, & tons of other classics.......You also might try your local Cracker Barrel in the gift shop.....

food coloring is the answer , before popping,put a few drop's of whatever color you want into some of the oil and add to the kernels ,let set for up to a day, then pop as usual . i recommend the bulk bagged corn and not any quickie thing packs !! you can also add flavoring by using oils or some spice to compliment the color ! try getting wild and confuse all with the opposite of what the color relates to - good party ice-breaker !!!!

I believe what you are looking for is called Indian Popcorn. It is several colors on the ear, however pops white.

don't believe you're gonna find any popcorn from 1950, i think it's all been eaten since about the 1960's