Material Theme Editor was a plugin for Sketch App which allowed you to create a material-based design system for your app. Launched May 9, 2018; shut down March 19, 2020 — it lived 1 year. One of 25 Google products killed in 2020. https://medium.com/google-design/whats-next-for-material-design-s-theming-tools-f65014ffcce7 Data: Killed by Google (killedbygoogle.com, MIT).