Before there were more apps using light themes, but for a while more and more apps come with dark themes. I personally really like working in dark themes. They are very easy on my eyes. Of course different people prefer different ones. Some of my colleagues use gray themes, and some of them like to boost saturation levels way above normal (5-10x).
For artistic software, are there any pros or cons to each? I imagine there must be some research done on this to figure out which one is the most effective, allowing you to focus on the artwork, etc. I know for instance when you see the same image on different backgrounds, it may appear slightly different in terms of color perception.