• For Sass variables whose value defaults to another Sass variable (e.g., border-color), you may hover over the value to get the (default) CSS value that it represents.
• For example, Navs (shiny::tabsetPanel()), Navbars (shiny::navbarPage()), and Dropdowns (e.g., shiny::navbarMenu()).
• Towards the top of the table are more general theming options like white, gray-*, black, primary, border-radius, and so on, which end up impacting more specific theming variables like btn-border-radius.
• bs_theme()’s bg and fg arguments provide a more convenient way to set the white, gray-*, and black variables, so there is no need to set these Sass variables directly (same goes for base_font -> $font-family-base, heading_font -> $headings-font-family, and code_font -> \$font-family-monospace).