naive-ui/styles/themes/light/components/Breadcrumb.scss

@mixin setup-light-breadcrumb {
  $--breadcrumb-link-text-color: (
    'default': $--n-tertiary-text-color,
    'active': $--n-primary-text-color,
    'hover': $--n-primary-color
  ) !global;
  $--breadcrumb-seperator-text-color: (
    'default': $--n-secondary-text-color
  ) !global;
}