GeoJSON Styling information

As far as I can see there is nothing in the GeoJSON standard to store styling information, i.e. line colours, thicknesses etc.

Am I missing something or is this just something that GeoJSON doesn't deal with?

Answer

For GeoJSON - CSS styles are used to modify your points, line, polygons with thickness & color

{ 
    "type": "Feature",
    "geometry": {
    "type": "Polygon",
    "coordinates": [[
        [-180.0, 10.0], [20.0, 90.0], [180.0, -5.0], [-30.0, -90.0]
        ]]

    },
    "style": {
        "__comment": "all SVG styles allowed",
        "fill":"red",
        "stroke-width":"3",
        "fill-opacity":0.6
    },
    "className": {
        "baseVal":"A class name"
    }

}

http://wiki.openstreetmap.org/wiki/Geojson_CSS