Custom CSS feature

[eliottmusk]

Please add a way to use custom CSS, so the user can customize the dark theme much more, and make fine adjustments, like set the cursor, shadows, text-decoration, opacity for links, images and so on without another plugin like Stylus. This can be game changer for your plugin. And this feature is optional, so you just use if you want. And if possible implement custom CSS Per Method and Per Site, so you can customize each method separately and also can fix sites.