enable changing the color of marker icons in a ScatterMapBox plot #6599

<head>
	<!-- Load plotly.js into the DOM -->
	<script src='https://cdn.plot.ly/plotly-2.20.0.min.js'></script>
</head>

<body>
	<div id='myDiv'><!-- Plotly chart will be drawn inside this DIV --></div>
        <script>
        var data = [
	{
		type: "scattermapbox",
		mode: "markers+text+lines",
		lon: [-75, -80, -50],
		lat: [45, 20, -20],
                color:'red',
		marker: { size: 20, symbol: 'bus' },
		text: 'bus',
		textposition: "bottom right"
	}
];

var layout = {
	mapbox: { style: "outdoors", zoom: 0.7 },
	showlegend: false, height: 500, width: 700
};

var config = {mapboxAccessToken: mytoken};

Plotly.newPlot("myDiv", data, layout, config);

    </script>
</body>