That gum reminds me of gum from my youth called Chiclets. They were shaped similar to those in your photo and came in a pack with two each of several very bright and vibrant colors.
My Mom and Dad use to sing in the choir at church when I was growing up. He had a nice bass voice and she a sweet soprano. My Grandmother played the organ, so my Grandfather would sit in the pew with use children and he always brought gum. Sometimes it was sticks of Juicy fruit and other times Chiclets. Those were the days !