This is how you work with design tokens directly in Sketch app with Stratos App. In this tutorial Juan Maguid shows you how to create them and also test them directly in code. He uses the Material UI Theme generator to create and try out his tokens.
MUI Theme Generator: https://cimdalli.github.io/mui-theme-generator/
Tutorial Sketch file: https://www.dropbox.com/s/414nu4lputxi7ku/MaterialUITokens.sketch?dl=0
• Sketch App 60+
• Stratos App: https://gumroad.com/l/stratosalphabeta