why remove fillcolor of polygon google map v2 android in zoom

Question

i add two polygon to google map and set fill color to them. my problem is that fill color of polygon be removed when I am zoom the map ... what is solution ? my code is below :

polygonTrafic = googleMap.addPolygon(rectOptions);
    polygonTrafic.setFillColor(Color.parseColor("#00ff00"));
    polygonTrafic.setStrokeWidth(0);