It's not just sublime, you can find the same thing for old textmate themes and even some vim themes.

> old textmate themes

I really wish the people working on Textmate right now would do SOMETHING to indicate on the homepage that Textmate is now open source, free, and actively developed on Github. Instead, they leave the Textmate 1.0 homepage up and people think it's an archaic, dead editor :(

1st Google result ( years out of date ): http://macromates.com/

2nd Google result ( actually the current project ): https://github.com/textmate/textmate

I figure it was started by the popular Solarized color theme: http://ethanschoonover.com/solarized

Sublime is a culture of people where a larger portion of the users are design oriented when compared to most editors.