[Update 2023-06-15] Updated to show how this can all be done with the @storybook/addon-styling plugin, and withThemeByClassName as opposed to withThemeByDataAttribute .

Here's a short PSA on how to quickly add a dark mode theme switcher to Storybook - without the use of a plugin.

Here's a short post on how to create a Material-UI theme switcher for React - using React.createContext. This is based on Praveen's excellent post here... https://techinscribed.com/building-react-app-using-material-ui-with-sup…

When we're done - you should see the following React app with a simple theme toggle switcher.