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
currentParent.setAttribute( "onmouseover", "TM.show(evt)" ); 
	}
	/**
	 * @return Returns the currentParent.
	 */
	public Element getCurrentParent( )
	{
		return currentParent;
	}
	/**
	 * @return Returns the currentElement.
	 */
	public Element getCurrentElement( )
	{
		return currentElement;
	}
	
	public String getStyleClass() {
		return styleClass;
	}
	public void setStyleClass(String styleClass) {
		this.styleClass = styleClass;
	}
	
	public void addCSSStyle(String className, String styleName, String styleValue){
		styleBuffer.append(className).append("{").append(styleName).append(":").append(styleValue).append(";}");				 
	}
	
	/**
	 * Inlines the script code in the generated svg output