Bug 55256 [Colors/Fonts] Rollback change to ColorRegistry for gets() on colors that do not exist
bundles/org.eclipse.jface/src/org/eclipse/jface/resource/ColorRegistry.java
.getSystemColor(SWT.COLOR_WIDGET_BACKGROUND)
			        		.getRGB());
    }
	/**
	 * Dispose of all of the <code>Color</code>s in this iterator.
	 * 
	 * @param Iterator over <code>Collection</code> of <code>Color</code>
	 */
	private void disposeColors(Iterator iterator) {
		while (iterator.hasNext()) {
			Object next = iterator.next();
			((Color) next).dispose();
		}
	}
	/**
	 * Returns the <code>color</code> associated with the given symbolic color 
	 * name, or a default valeu if no such definition exists.
	 * 
	 * @param symbolicName symbolic color name.
	 * @return the <code>Color</code>.
	 */
	public Color get(String symbolicName) {
		Assert.isNotNull(symbolicName);
		Object result = stringToColor.get(symbolicName);
		if (result != null)
			return (Color) result;
		Color color = null;
		
		result = stringToRGB.get(symbolicName);
		if (result == null)