I'm running the latest version of this game and this problem is still present. I've been having it for the past 4 or so updates now.
I hadn't played aliens in awhile and when I made one yesterday had the same issue. The hair color was not the one I was choosing and the colors kept changing every time I rotated through trying to pick a color. I made a YA female and I haven't looked at the males to know if it affects them. However, it wasn't affecting my human sims the chosen hair color appeared as the color it was.
February 2019 - last edited February 2019
I'm not entirely sure if it's the same issue that I'm having, but I'm having issues with hair and eyebrow swatches as well - in my game, it's affected both males and females and all occult life states - vampires, too. I do have to add that the vampire in question had an alien father, so he does have alien genes (and an alien skin color).It affects all ages for me, even (especially actually) toddlers and kids. For me, what I notice most of all is my Sims' hair colors randomly have changed. Noticed this mostly on unplayed Sims. When I go into CAS to change their colors back to what they had, the swatches don't really work well but I do eventually manage to get it working and they'll go out of CAS with their normal hair colors... but it will at some point randomly switch up again. So I'm not sure if it's the same issue exactly, as mine is more about Sims with occult genes changing hair colors out of nowhere, but I do think this has to do with the swatches. Also seemed to affect hybrid Sims most of all, i.e. Sims who had at least one alien parent. The ones most affected for me have been two vampires with alien parents, who have an alien skintone (not alien/vamp hybrids as they were not born through abductions). Might also just look like it affects hybrid Sims more because they're undisguised, though. I don't check up on my alien's forms as much.
Feb 21 patch update has not fixed this issue for female aliens. (I'm not sure about vamps or vampliens as I don't currently have either in game.) No mods, created in a brand new game and it's still there... it's really rather disappointing that it's still not fixed.
Thanks. Just dropping the info on here for future reference.
Product: The Sims 4
Which language are you playing the game in? Svenska
How often does the bug occur? Often (50% - 99%)
What is your current game version number? 18.104.22.1680
What expansions, game packs, and stuff packs do you have installed? All expansion packs, Vampires, Jungle Adventure, Luxury Party Stuff, Kids Room Stuff, and Holiday Celebration Pack.
Steps: How can we find the bug ourselves? When in CAS, put hair on an alien and then change the hair colour.
What happens when the bug occurs? When I change the hair colour of an alien the colour doesn't change to the one I'm picking, it changes randomly. It's the same for aliens of all ages and genders.
What do you expect to see? That the hair colour changes to the hair colour I choose.
Have you installed any customization with the game, e.g. Custom Content or Mods? Never used.
Did this issue appear after a specific patch or change you made to your system? Neutral/Not Sure
The hair colour changes randomly when I choose a hair colour for an alien in CAS.