Zoomable charts data color issue

Hi,
I'm using SmartGWTPro version 4.0-010514. I want to use custom data colors so we're calling

chart.setDataColors(Palette.getColors());
FacetChart zcp = new FacetChart();
zcp.setShowInlineLabels(false);
zcp.setDataColors(Palette.getColors());
chart.setZoomChartProperties(zcp);

I noticed that the zoom chart at the bottom shows different colors between the range boundaries sliders. Please see the attached screen shot.
Is this correct? If not, is there a way to make this right?

This showcase example shows same color.
http://www.smartclient.com/smartgwtee/showcase/#measurementDataZoom

Thanks.

Attached Images

ZoomableChartDataColorIssue.PNG (54.8 KB)