The way they talk about it makes it sound like they invented the written word, but that notwithstanding the fonts actually look really nice in my opinion.
You are correct, but I find dialing an easy-on-the-eyes colour and a good font reduces eye strain. It lets me keep the font size small with less fatigue especially as my eyes (and I) age.
As for what theme? Usually itβs as simple as browsing through the presets until one jumps out. Takes a few seconds. Having more presets adds about 2 seconds to the process and often (not always!) results in an even better choice. Have no idea the name of the theme I end up with.
Besides, tweaking this can be fun if youβre between thoughts - you end up learning the inner workings of the environment.