I used to use Solarized everywhere, and it's still my fallback. I like its consistent colours, and I use the darker colours as my wallpaper on my desktop/laptop

I used to use Solarized everywhere, and it's still my fallback. I like its consistent colours, and I use the darker colours as my wallpaper on my desktop/laptop. I've switched to using One Dark in my editors though, it feels slightly easier on my (aging!) eyes. A lot of people use Solarized, I think, because they are not happy with the defaults, and Solarized is very well put together. So when people see the new colours available to them, they think "this is great! I should use this everywhere!" and thus it gets potentially way overused.