Stashed in: Disney!, Rainbows!, KPop JPop, 1960s, 1990s, Music Videos
Compare with "Sunshine, Lollipops, and Rainbows" by Lesley Gore:
It's from 1965 and was featured in Cloudy with a Chance of Meatballs.
Compare with "Sugar Sugar" by Mary Lou Lord and Semisonic:
A 1990s remake of a 1960s song.