Material Design
p/material-design
Introducing material you
Jorgen Gedeon
Google Material Theme Editor — Create and customize your Material theme
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The Material Theme Editor helps you make your own branded symbol library and apply global style changes to color, shape, and typography. Currently available for Sketch, you can access the Material Theme Editor by downloading the Material Plugin.

Replies
Jorgen Gedeon
This looks really impressive. Just the Theme colour palette alone got me with its live feedback and automated colour management.