Sure thing, I should have explained in my first comment. I have two problems with dark themes. One is that much of what I do on my computer will have light the

Sure thing, I should have explained in my first comment. I have two problems with dark themes. One is that much of what I do on my computer will have light themes - websites, GIS software, Word and Excel, PDF documents, etc. It's hard on my eyes to switch back and forth between these and a dark themed editor - like walking in and out of a dark theater on a sunny day, over and over again. The other problem has to do with eye focus. The irises in your eyes stop down or open up to adjust for light or dark. Just like a camera lens, stopping down (reducing the aperture) can help with focus. A perfect lens can focus sharply at any aperture; a less perfect lens will focus better if you stop it down. Here are some interesting discussions on the topic: https://www.google.com/search?q=light+dark+themes+eye+focus https://www.google.com/search?q=light+dark+themes+eye+focus