As the subject suggests, I think the ability to support multiple swatches in a single project would be a fantastic addition to Themebuilder!

This change would allow a user to select a theme that'll encompass an app's light mode, and once finished, select a separate theme to repeat the process for dark.

As it currently stands, separate Themebuilder projects need to be created in order to separate light and dark themes. 

Thank you in advance for your consideration!