This is incredibly important for a tool like a "ThemeBuilder" to do.  There are too many colors for someone to easily swap out, which makes the tool hard to manage for color.  I know we can use another tool to create color palettes and then plug it in, but honestly this is one of the top things a ThemeBuilder should do. 

It should make swapping color categories simple by allowing you to select the colors for primary, danger, warning, tertiary, info, etc. and then the tool generates a color palette within the color family automatically. Then, if the user does not like any of the colors automated, they could manually swap them out like they do today.