Suggestion: Dark Mode for Khan Academy

Khan Academy probably won’t add a dark mode any time soon. Many have requested it already. Instead, they’ll work on more important things such as creating content. If you know a little programming, you can always use jQuery in the developers console to change the colors of the webpage to your preference.

I use Chrome extension "Dark Reader" it works great on Khan Academy. 

To enable dark mode in KA app for android, open developer options> force dark mode. Done

In chrome, open chrome then in url bar type chrome://flags

>in search bar type - dark.

Enable force dark mode and darken website theme settings

>once done tap relaunch.

Now go to  chrome settings (3 dots), theme > darken website (basically forces all websites to go dark mode)