The discussion revolves around adding different logos for light and dark themes in Discourse. djcyry asks how to achieve this and also inquires about adding a night/day mode button. cpradio suggests enabling the “Theme can be selected by users” checkbox in Admin settings, but djcyry wants a floating button.
sam shares a technique for allowing users to select dark/light themes, but n-b-sonar reports that this method no longer works due to a regression.
david recommends using a theme component, but Johnny_McIvor and tim_sevDesk ask about the availability of the plugin. david finally provides a solution, stating that users can now upload ‘dark mode’ versions of their logos in the site settings under the branding tab.
Ok , i will try with the photoshop (poor skills 
)
What about this :
Also , is there any option to add a button for night/day mode in index , to change the theme ?
If you check the “Theme can be selected by users” checkbox in Admin > Customize, it will show up as a link in the Hamburger menu.
Yes i know .
But i want to add a float button on index to do that .
Its a bad idea ? Just ask . Thanks
That could likely be done via a customization, but it would involve JavaScript and some CSS to style the button. Not sure how hard it would be to do, but I imagine it shouldn’t be terribly difficult as the themes should be exposed via the API.
I covered the technique here btw:
The best method now is to use this theme component:
https://meta.discourse.org/t/alternative-logo-for-dark-themes/88502?u=david
I will update the post you linked so it doesn’t confuse people in future.
こんにちは、このプラグインはまだ利用可能ですか？
これに対する解決策はありますか？リンクはもう利用できません @david。
