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
tree.setComparator(new ResourceComparator(ResourceComparator.NAME));
        data = new GridData(GridData.FILL_BOTH | GridData.GRAB_VERTICAL);
        data.heightHint = SIZING_SELECTION_WIDGET_HEIGHT;
        data.widthHint = SIZING_SELECTION_WIDGET_WIDTH;
        tree.getControl().setLayoutData(data);
        tree.addCheckStateListener(new ICheckStateListener() {
            public void checkStateChanged(CheckStateChangedEvent event) {
                handleCheckStateChange(event);
            }
        });
        tree.addTreeListener(new ITreeViewerListener() {
            public void treeCollapsed(TreeExpansionEvent event) {
            }
            public void treeExpanded(TreeExpansionEvent event) {
                final Object element = event.getElement();
                if (tree.getGrayed(element) == false) {
					BusyIndicator.showWhile(getShell().getDisplay(),
                            new Runnable() {
                                public void run() {
                                    setSubtreeChecked((IContainer) element,
                                            tree.getChecked(element), false);
                                }
                            });
				}
            }
        });
		
		Composite buttonComposite = new Composite(composite, SWT.NONE);
		layout = new GridLayout(2, false);
		layout.marginWidth = 0;