tileBorderWidth

tileBorderWidth - Specifies the tile border width in the color grid of basic palette of ColorPicker widget. Its default value is 0.

<input id="colorpicker" type="color" />

<script type="text/javascript">

     $(function () {
        $("#colorpicker").shieldColorPicker({
           basicPalette: {
                 tileBorderWidth: 1
           },
           value: "#FFCCCC"
        });
     });

</script>