A cashier not only let my kid buy a lemon-lime sherbet called Frazzle Freeze ($1.55) after hours, but then replaced it for free when he tearfully dropped it.
Lemon-lime sherbet image from Gannons Ice Cream
Frazzle was a Sesame Street character who was popular in the early 1980s.
Image from Muppet Wiki
Frazzle was often used in artwork at the park:
1986 Image from YouTube
I betting that the Frazzle Freeze was often available in orange.