One can also go into their preferences as well. I have mine set to "MacRumors Autodetect" right now, and last night experimented with the dark mode just to see but as expected, it was too harsh and hard on my eyes so I quickly went back to Autodetect, which for me displays everything in Light Mode, which makes sense as that is how I've got the computer set up as well. Dark mode is great when working on editing images and displaying images, but for text, not so great....also not so great for aging eyes! I could also simply have chosen "light Mode rather than Autodetect.