code-lab/node_modules/vuetify/lib/components/VCarousel/_variables.scss

// VCarousel
$carousel-controls-bg: rgba(var(--v-theme-surface-variant), .3) !default;
$carousel-controls-color: rgb(var(--v-theme-on-surface-variant)) !default;
$carousel-controls-size: 50px !default;
$carousel-dot-margin: 0 8px !default;
$carousel-dot-inactive-opacity: .5 !default;
$carousel-dot-active-opacity: 1 !default;
$carousel-dot-hover-opacity: .8 !default;

$carousel-controls-theme: (
  $carousel-controls-bg,
  $carousel-controls-color
) !default;