The only reason for ID's to have color is to give them personality and make them stand out so it's harder for them to be ignored. /a/ already implemented default CSS to remove the color and hide id's unless hovered over. I believe if we have to have ID's they should be as unintrusive as possible, and giving them color only encourages identifying with your id which is against the idea of being anonymous. >inb4 "it doesn't look as nice" or "it helps me match id's" I don't think ID's are supposed to look pretty. The only value of having colors is being able to easily identify which posts are from a given id, but you can still do that if you really want to by double clicking the id, and I think the burden should be on those who want to use the id rather than force everyone to always be wary of them.