Approving here does not add anything to the live catalog — use the info shown to add it yourself below, same verification discipline as everything else.
Custom font and colors, applied everywhere including this admin panel. A custom text/background color overrides the dark/light toggle above (it sets the same variables directly). Category color controls the category/section/group/make/model words in the sidebar, which use a separate variable from the main text color. Leave the font name blank to keep the built-in font. Color pickers always show a value — use "Reset to default" below to clear a saved color rather than trying to blank the picker.