It's inspired by the brackets editor.
You can search "Parenthesis UI" in the setting menu.
Or you can also execute this in the terminal.
apm install parenthesis-ui
Well, it's far from complete. But here's how it looks now anyways.
I'm thinking of adding bright mode for syntax themes with white background.
I am a student. Studying Computer Science at Hanyang Univ.
I'll try my best to complete the theme asap :)
Good catch. Let us know what about this package looks wrong to you, and we'll investigate right away.