Back on vBulletin I had a large mix of dark and light styles, which was fine. The only problem was the Registered Users user group: if I styled it white, then the members' usernames couldn't be seen on light styles and vice-versa for dark styles. I finally asked one day, and a former vBulletin employee had me change the code in the user group and then add CSS to each individual style that went with the code in the user group. Right now on XenForo I don't have any styling applied to the Registered user group and just use the default link color. However, is what I mentioned above possible on XenForo (e.g., black styling on light styles and white styling on dark styles)? Thanks.