Interface CSSSystemLookupOptions

The element under which the probe is placed and whose inherited custom properties are read. Defaults to document.body. Provide a getter so the element can be resolved lazily. Use this when the --sxl-sys-color-* variables are scoped to a container rather than :root.

Prefix for the CSS custom properties read for each system color. The variable name is ${prefix}${named.toLowerCase()} (with an optional -dark variant).