You can now set a default theme for your account (and still override on individual devices if you want)
This is another feature that's been requested a number of times, and was implemented as an open-source contribution by @Celeo.
If you're not aware (since apparently a fair number of people haven't noticed them), there are currently 4 different color themes for the site that you can choose from on the settings page. Until now, this choice has always only applied to the specific device that you're on, and is stored in a cookie, so people that switch devices often or clear their cookies were a bit annoyed by needing to re-select their theme every time they log in.
Now you can set a default theme for your account, so when you log into your account it will automatically change to that theme (but you can still override it if you want to use a different theme on that device). To do this, just change to the theme that you want to use as your default on the settings page, and a button to set as default should show up next to the dropdown. The behavior of it's still a little bit weird in some cases, so you may need to change the dropdown away and back if it's already set to the one you want to use.
Thanks so much, I have cookies set to autoclear when I close Firefox so I've been having to change it every time I boot up. Great QoL change!
@Celeo Thank you, you beautiful bastard. That bright white has assaulted my eyes for far too long :)
Haha, you're welcome!
Yes! I log on to Tildes at work using incognito mode (so it doesn't store my password). And it always reverts to the white theme, when I prefer the Solarized Light theme (less contrast-y, less bright, more classy). Thank you!
You can (and probably should) disable password storing for all major browsers.
Thanks @Celeo, this is an awesome update! I needed it so much. In case someone is wondering how it works (it happened to me), the link to set the theme as default doesn't appear until you change to another theme. So if you are already using the theme you want as default, but it isn't marked as default, change to another theme and change back to the one you had to make the link appear.
The dark theme's been there the whole time!
We definitely need to do a better job of getting people to go to the Settings page somehow, both the themes and the "marking new comments" feature improve the site a lot and people aren't finding them on their own.
Are custom themes something that could potentially be supported in the future?
I think the dark theme works well on mobile but I would personally prefer a "light grey" style dark theme for non-mobile devices.
Deimos recently asked for examples of themes that work, because "it's quite easy to add more themes now".
Also, people have already created extensions for Tildes. There's "Tildes Extended", for one. This post should have more information for you.
I don't know if there will ever be an actual feature for creating custom themes on the site (probably not any time in the near future, anyway), but I'm planning to add some more themes fairly soon.
You can also make your own theme fairly easily using an extension like Stylus that allows you to write your own client-side CSS overrides.
@Celeo, @Deimos, I bow to you.