Bug 145144 SVG Interactivity cannot highlight gradient colors
Create any SVG Chart with gradient colors on the series palette. Add interactivity on series to highlight them on mouseover for instance (or mouse click) The highlight doesn't work. It works for plain colors only.
chart/org.eclipse.birt.chart.device.svg/src/org/eclipse/birt/chart/device/svg/SVGGraphics2D.java
public void drawArc( int arg0, int arg1, int arg2, int arg3, int arg4,
			int arg5 )
	{
		drawArc( (double) arg0,
				(double) arg1,
				(double) arg2,
				(double) arg3,
				(double) arg4,
				(double) arg5 );
	}
	public void drawArc( double arg0, double arg1, double arg2, double arg3,
			double arg4, double arg5 )
	{
		currentElement = createArc( arg0, arg1, arg2, arg3, arg4, arg5 );
		appendChild( currentElement );
		setStrokeStyle( currentElement );
	}
	
	protected void setStrokeStyle( Element currentElement )
	{
		setStrokeStyle(currentElement, false);
	}
	/**
	 * Adds stroke color and style information to the element passed in.
	 * 
	 * @param currentElement the element to add style information to.
	 * @param isClipped boolean that determines whether to defer the clipping of the element
	 */
	protected void setStrokeStyle( Element currentElement, boolean deferClipped)
	{