Bug 316482 Active tab colour flickers when bringing up the context menu on a view
The tab's colour will flicker between blue and white when you right-click on it.
bundles/org.eclipse.e4.ui.workbench.renderers.swt/src/org/eclipse/e4/ui/workbench/renderers/swt/WBWRenderer.java
data.heightHint = 250;
			data.widthHint = 300;
			tableViewer.getControl().setLayoutData(data);
			tableViewer.setLabelProvider(new LabelProvider() {
				@Override
				public String getText(Object element) {
					return ((MPart) element).getLabel();
				}
			});
			tableViewer.setContentProvider(ArrayContentProvider.getInstance());
			tableViewer.setInput(collection);
			tableViewer.setAllChecked(true);
			return parent;
		}
		@Override
		public void create() {
			super.create();
			applyDialogStyles(getShell());
		}
		@Override
		protected void okPressed() {
			checkedElements = tableViewer.getCheckedElements();
			super.okPressed();
		}
		public Object[] getCheckedElements() {
			return checkedElements;
		}
	}
}