I need help

Hello everyone! Yesterday I found an interesting video that shows a command that helps you get rainbow glow in Minecraft, but sadly it seems to work only for 1.10 (I tested) and I was wondering if there are any programs/generators that help transform a command from one version to another. The command that I'm talking about is this (Credits to The SpellBook) : https://pastebin.com/grKmcvsY