title: Prodution ready themeSelector for Shiny
body: <p>I need to create a Shiny App that has a light and dark theme, which the users can pick inside the UI. On RStudio's site a page details <a href="https://rstudio.github.io/shinythemes/" rel="nofollow noreferrer" title="themes documentation">themes</a> and the themeSelector(), but it states "The theme selector is only meant to be used while developing an application." Are there any librarys which allow dynamically changing themes that are production ready?</p>