Theme-ui color mode and dynamic routes with export

[rphuber]

I am having trouble getting my theme color mode to persist on refresh of a dynamic router (created by getStaticPaths and using getStaticProps). it works fine if I navigate from the index page (or refresh on the index page) but if I load one of the dynamic pages (or refresh on one) it breaks the color mode and resets the styles to the default color mode. Is there something I am missing about the ssg pages in the docs?