themes-wordpress/varia/sass/blocks/cover/_config.scss

/**
 * Cover
 */
$config-cover: (
	"height": #{15 * map-deep-get($config-global, "spacing", "vertical")},
	"color": (
		"foreground": #{map-deep-get($config-global, "color", "white")},
		"background": #{map-deep-get($config-global, "color", "black")},
	)
);