Add some color

[soggybag]

Currently the UI is mistype monochrome. It would be good to have some color.

Here are a few more ideas.

1. Buttons need some color. A primary color for the most common options. A secondary color for less common options and something to mark dangerous choices like delete.
2. Best to declare these colors in the style sheet as custom properties and use names that describe their use.
3. Add colors for interactive states like hover and active.
4. Add a color for disabled buttons. These won't be applied currently but could be made use of in the future.

[soggybag]

Closed, thanks