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
if ( clip != null )
			currentElement.setAttribute( "clip-path", "url(#clip" + clip.hashCode( ) + ")" ); 
		appendChild( currentElement );
		return true;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see java.awt.Graphics#drawImage(java.awt.Image, int, int, int, int, int,
	 *      int, int, int, java.awt.Color, java.awt.image.ImageObserver)
	 */
	public boolean drawImage( Image arg0, int arg1, int arg2, int arg3,
			int arg4, int arg5, int arg6, int arg7, int arg8, Color arg9,
			ImageObserver arg10 )
	{
		SVGImage image = (SVGImage) arg0;
		Element currentElement = createElement( "image" ); 
		currentElement.setAttribute( "xlink:href", image.getUrl( ) ); 
		currentElement.setAttribute( "x", Double.toString( arg1 ) ); 
		currentElement.setAttribute( "y", Double.toString( arg2 ) ); 
		currentElement.setAttribute( "width", Double.toString( arg3 ) ); 
		currentElement.setAttribute( "height", Double.toString( arg4 ) ); 
		currentElement.setAttribute( "fill", serializeToString( arg9 ) ); 
		if ( clip != null )
			currentElement.setAttribute( "clip-path", "url(#clip" + clip.hashCode( ) + ")" ); 
		appendChild( currentElement );
		return true;
	}
	/**
	 * Unload any resources associated with the graphic context