Yeah this too.I dont know the formula to recreate it exactly,bit iirc some official players may have accessories like bands and gloves while their option is set to default.If you scroll very fast while editing and assign "both hands" without messing with the colours, the old one stays as it was and the new takes the new default, usually white or kits colour.
As i said before the report process to KONAMI is a p@in in the @$$,i am not brave enough to waste so much time making videos,uploading and begging a reply-bot for such details.But i must accept that the in-game editing menu regresses and becones buggier over time.