Bug 284138 [CSS] ETabItem wrong background color behind X
If the close box is not shown (but space is allocated, e.g. editors) then the a gray background is drawn in it's place. It's the wrong color background though, it should be now the unselected tab background color.
bundles/org.eclipse.e4.ui.widgets/src/org/eclipse/e4/ui/widgets/ETabItem.java
*/
public ETabItem(ETabFolder parent, int style) {
	this(parent, style, parent.getItemCount());
}
/**
 * @param parent
 * @param style
 * @param index
 */
public ETabItem(ETabFolder parent, int style, int index) {
	super(parent, style, index);
}
public ETabFolder getETabParent() {
	return (ETabFolder) parent;
}
boolean useEllipses() {
	return false;
}
void drawSelected(GC gc) {
	
	if(! getETabParent().webbyStyle || this.parent.onBottom || parent.single) {
		super.drawSelected(gc);
		return;
	}
	
	int topOffset = getETabParent().getSelectedTabTopOffset();
	
	Point size = parent.getSize();
	int rightEdge = Math.min (x + width, parent.getRightItemEdge());