[noir_lord]

with old.reddit.com when logged in you can opt out for subreddits been able to override the CSS then you get the vanilla and clean defaults everywhere.

I use it as my "whoops, forgot to login" reminder.

[KallDrexx]

I didn't know you could do that, I'll give that a try.

[lamontcg]

you can also nuke the subreddit style for individual subreddits when you are logged out.