gord0 Check out the repo for the theme: https://github.com/pichalite/nodebb-theme-slick
You can look at how the Dark theme is implemented and see what calls need to be changed to add additional colors there. I think this is the commit that put dark in: https://github.com/pichalite/nodebb-theme-slick/commit/b3dddcae9127e7ddfefe2bafb4835661195b3f22