Map box Marker properties

According to map box api you can easily add some properties to change the marker appearance.
Would be cool if we these properties would be passed on to map box

        "geometry": {
          "type": "Point",
          "coordinates": [-77.031952,38.913184]
        "properties": {
          "marker-color": "#3ca0d3",
          "marker-size": "large",
          "marker-symbol": "rocket"

Yeah we definitely want to allow this. It would be really nice if this was part of the geojson API so we could work out of the box without adding MapBox (or alternatively RunKit) specific API to this.