Bug 178297 [Dialogs] - remove required field color
There are still some dialogs using the (now deprecated) class FieldAssistColors. We shouldn't color the required fields anymore in these dialogs: NewFolderDialog CreateLinkedResourceGroup ResourceWorkingSetPage ContainerSelectionGroup ResourceAndContainerGroup
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/CreateLinkedResourceGroup.java
* @return the widget group
	 */
	public Composite createContents(Composite parent) {
		Font font = parent.getFont();
		initializeDialogUnits(parent);
		
		groupComposite = new Composite(parent, SWT.NONE);
		GridLayout layout = new GridLayout();
		groupComposite.setLayout(layout);
		groupComposite.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_FILL
				| GridData.FILL_HORIZONTAL));
		groupComposite.setFont(font);
		final Button createLinkButton = new Button(groupComposite, SWT.CHECK);
		if (type == IResource.FILE) {
			createLinkButton
					.setText(IDEWorkbenchMessages.CreateLinkedResourceGroup_linkFileButton);
		} else {
			createLinkButton
					.setText(IDEWorkbenchMessages.CreateLinkedResourceGroup_linkFolderButton);
		}
		createLinkButton.setSelection(createLink);
		createLinkButton.setFont(font);
		SelectionListener selectionListener = new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
				createLink = createLinkButton.getSelection();
				browseButton.setEnabled(createLink);
				variablesButton.setEnabled(createLink);
				
				if (createLink) {
					linkTargetField.setBackground(FieldAssistColors