Hi there!

We understand how important this is for our users, and want to keep recording the feedback about a potential night mode feature for Khan Academy and the SAT environment specifically.

That said, in the meantime, I’d like to recommend you check out some apps that add this kind of functionality. F.lux, for example, is specifically designed to make the colors on your computer's display adapt to the time of day.

Some more options are available here:

• Redshift - Windows, Linux, BSD
• Lightbulb - Windows
• Twilight - Android
• Iris mini - Mac, Windows, Linux
• G.lux - Mac, Windows, Linux, Chrome, OS, Chrome

Thanks again for your interest in improving Khan Academy! :)