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/ResourceWorkingSetPage.java
layout.marginHeight = 0;
		layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
		buttonComposite.setLayout(layout);
		buttonComposite.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
		
		Button selectAllButton = new Button(buttonComposite, SWT.PUSH);
		selectAllButton.setText(IDEWorkbenchMessages.ResourceWorkingSetPage_selectAll_label);
		selectAllButton.setToolTipText(IDEWorkbenchMessages.ResourceWorkingSetPage_selectAll_toolTip);
		selectAllButton.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent selectionEvent) {
				tree.setCheckedElements(treeContentProvider.getElements(tree.getInput()));
				validateInput();
			}
		});
		setButtonLayoutData(selectAllButton);
		Button deselectAllButton = new Button(buttonComposite, SWT.PUSH);
		deselectAllButton.setText(IDEWorkbenchMessages.ResourceWorkingSetPage_deselectAll_label);
		deselectAllButton.setToolTipText(IDEWorkbenchMessages.ResourceWorkingSetPage_deselectAll_toolTip);
		deselectAllButton.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent selectionEvent) {
				tree.setCheckedElements(new Object[0]);
				validateInput();
			}
		});
		setButtonLayoutData(deselectAllButton);
		
		initializeCheckedState();
        if (workingSet != null) {
            text.setText(workingSet.getName());
        }