feature request: `utrecht.ordered-list.marker.color` design token.

[Robbert]

Currently the ordered list has no color design tokens (#2349).

https://github.com/nl-design-system/utrecht/blob/main/components/unordered-list/src/_mixin.scss#L48

Because the unordered list has a marker color design token, it would be consistent to also offer a marker color design token for the ordered list.