There is tmTheme-Editor at tmtheme-editor.herokuapp.com/. It allows to edit of create new themes.
When I download an edited theme on Windows I get standard theme_name.tmTheme file. I just add it to themes folder and all works fine - I can set a new theme from ST2.
Now I’m on Ubuntu. And I did the same with IDLE theme. But instead of IDLE.tmTheme i got some IDLE.bin. How may I add this .bin file to themes? Where themes are stored on Ubuntu, in what directory?