Themes Support

[lumitry]

The app by default has a dark UI. Theme support should be added at some point.

Currently unsure how they'll be defined. Custom themes should be possible with both import and export features; I like iTerm 2's implementation personally. Ideally, themes would get stored (i.e. in the repo) in the same file format as the theme exports, that way we only need one bit of logic for changing color variables.

Probably won't be the most in-depth theming system in the world.

As a temporary patch to get some of the same effects, adding a "custom css" page in the settings menu would allow users to overwrite certain styling. Not sure how easy that'd be to implement, especially since I'm currently using SASS for styling.

• All colors should be SASS/CSS variables except where doing so doesn't make sense
• SASS/CSS variables should be modifiable by some logic such that a theme switch is possible
• Reading themes from file
• Import/export themes
• Theme repo