Add more options to Shape Styles and Color Themes

Hello everyone, 

I write here an idea about improving the options we already have when using Shape styles and Color themes. 

Basically, presets exist where it uses "Light 1 Outline, Colored Fill - Accent 1", but what if I want to use "Dark 1 Outline, Colored Fill - Accent 1" ? 

Actually, I have to add the "correct" border color manually... and if I change color theme, then I have to redo it again with the new color (since the border is not changing with the theme).
So either I do something wrong, or it would be nice to have maybe some ways to change this tab to define "I want this mix of color" instead of the actual presets.