For some items my customers can add a background or font color in the CMS.
But my customers do not know what color they have to choose, it would be perfect if there's an option in the designer to say: Let the CMS choose only the "Added" colors (out of the the designers color Block)
Yea, just been finding this recently. Makes particular sense if you're trying to tie in blog posts with your global branding styles.
The brilliant thing about global colors is not needing to go into a color picker outside of the app. At the moment however, we do need to break away from Webflow.com to get this bit right.