User
Profile
Theme
Pick the colours the site uses. Your choice is saved to your account, so it follows you onto every device you sign in on.
On by default for new accounts. While a season is open its theme is used for you; turn this off to keep only the theme you pick below. Picking a different theme while a season is open also turns it off.
Day and night follow the time zone of the country on your profile.
Seasonal themes
One for each event of the year. Each unlocks for its own dates and is locked the rest of the time. With automatic seasonal themes on, an unlocked one is used for you until its dates end; you can also pick one by hand as your day or night theme. Most seasons get quiet decorations; Halloween gets fog, flying bats and a few crawling surprises on the account button. All of it switches off if your device is set to reduce motion.