Global Swatches in Webflow are great! . . . however the next step beyond this is to support other style properties in a similar fashion.
The idea with "Style Pallet" is to create a place in Webflow where you can define:
1.) Your collection of colors (Global Swatches)
2.) Common Dimensions (Global Units?)
3.) Font Weight Definitions (Global Weights?)
4.) Animation Definitions (Global Animations?)
Adding functionality like this would make it extremely easy to design systematically.
These should also be available in the CSS as Custom Properties to be referenced in custom code.