Add Dark Mode Theme

[galfonso777]

Add Dark Mode Theme along with the default Light Mode Theme

[token0]

I've made one for myself: https://github.com/token0/sidewise-css

PS: looks like Joel abandoned this project.

[myfairsyer]

@token0 Mind to add screenshots to your readme?

[fissbomb]

@token0 is there a way to edit font size and padding for the sidebar?

[suhancz]

@token0 is there a way to edit font size and padding for the sidebar?

You can. It's CSS, so you can just look for font-size and padding- in the code and change them to your preferred values before overwriting the files. Though I recently ran into an issue that after changing the CSS the extension gets corrupted, though I'm not sure if it's only me or new Chrome is not happy with this.