This is an Extension for my Themes Outline and Ethereal. It includes additional colors.
1. Install default Colors from Outline/Ethereal
2. Install the color you want from this extension. It should override the one selected in Outline/Ethereal
If you have color wishes (single color or color palette (red,blue,green,orange,purple) eithere have a look at Github (https://github.com/Sh4dowSoul/Outline-Colors) and create a pull request or write me an email.