The Sims4 Perfect Genetics Challenge

@goldenwhisker if your not opposed to mods/cc there is a way for toddlers to inherit the unnatural hair colors I use it in my own game and love it.

https://simscommunity.info/social/threads/genetic-unnatural-hair-colours-for-kids-tots-base-game-all-packs.5504/

you download the file and just put the ones from the packs you own into your mods folder. :D I hope you get an heir(ess) soon!