I think we’d want to avoid colors being the only thing conveying the difference because there’s so much variation once you get into color schemes. Plus colorblind users wouldn’t be able to tell the difference in some cases.
I haven’t looked into it yet, but since we’ve upgraded our icons we have a lot more available than we used to… so there might be a better way to distinguish moderator vs admin rather than doubling the icon.
Maybe admins get the shield and moderators have a gavel?