Apple Watch Series 8 hands color
Why are the hands changing color with no input from user?
Question marked as
You may be inadvertently swiping right (with your sleeve perhaps) and changing watch faces that have the same features but different colors. To check, on your iPhone tap:
Watch > My Watch
and see what faces you can change (buy swiping the watch) under the "My Faces" category.
If that is not the problem, the first (and simplest) thing to try if something isn’t working right is to restart your Apple Watch and its paired iPhone. If necessary (device not responding), try a forced restart. Both methods can be found here:
How to restart your Apple Watch - Apple Support
Restart your iPhone - Apple Support
If that doesn't help, the next steps would be to unpair and pair your watch again and restore from the backup just created. This should result in no loss of data. It deletes all temp and corrupted files and re-indexes the file system.
Unpair and erase your Apple Watch - Apple Support
Set up your Apple Watch - Apple Support