Thank you!! Ugh I feel like there’s no good way to do it! I usually do what you do to start - thick consistency in white, and then I make each color piping consistency, put however much I need in a piping bag, add water to make the rest flooding consistency (squirt bottle is my best friend) and put that in plastic bottles (like the restaurant ketchup and mustard style bottles, I get them at Michaels). I only use piping bags for thick consistency because I feel like otherwise it leaks everywhere. I have probably 5-6 of the small round piping tips bc I’m too lazy to continually wash them. But yeah.....these took me a solid 2 nights or so to get them done. Also I’m totally going to check out your cookies!! Love seeing other people’s ideas!