rgb2num$1 = function () {
        var args = [], len = arguments.length;
        while ( len-- ) args[ len ] = arguments[ len ];

        var ref = unpack$8(args, 'rgb');
        var r = ref[0];
        var g = ref[1];
        var b = ref[2];
        return (r << 16) + (g << 8) + b;
    }
X11 color names

    	http://www.w3.org/TR/css3-color/#svg-color