Greetings, I must say, Opera is without a doubt running buttery smooth on my Surface Pro 4. It's a good substitute for Microsoft's Edge, which unfortunately doesn't support extensions yet.
However, there's a thing that has been bothering me so far. It's Opera's bright user interface, which isn't a pleasure to use at night. After a while, I just gets tiring on the eyes and hinders productivity by a fair amount. Are there plans to bring a dark theme to the browser? Or can I somehow theme it myself without having to build it from the source?
I entirely agree with your assessment. Opera, however, has not revealed any plans to create a dark theme nor are there any ways to do it oneself.