You can do this on a computer or mobile. Screenshots are from a computer but it looks very similar on a mobile and the steps are the same.
- Click on your avatar to drop down the menu and click the user preferences icon.

- Select
Preferencesand thenInterface. (If you’re using a mobile you may have to swipe left on the options under Preferences to find theInterfacetab.) - Click the Theme option menu and select
redditish
- (Optional) Just underneath the Themes menu are the Colour Scheme menus. If you don’t use dark mode on your computer or phone you can skip this step. If you do use dark mode, choose
Redditish Darkfrom Dark mode menu.
-
(Optional). If you use more than one device to access the forum and don’t want to apply the new theme to all of them, uncheck the box for
Set default colour scheme for all my devices. -
Click
Save Changesat the bottom of the page.

If you want to go back to the normal theme, follow these steps, select Material Design Theme and, if necessary, Dark from the Dark mode menu.

