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/misc/ResourceAndContainerGroup.java
* <br>
	 * (3) Resource name field text does not already end with a '.' and the 
	 *     resource extension specified (case sensitive)
     * <br><br>   
	 * The resource extension will not be reflected in the actual 
	 * resource name field until the resource name field loses focus.
	 * 
     * @param value
	 *             The resource extension without the '.' prefix 
	 *             (e.g. 'java', 'xml')
     * @since 3.3
     */
    public void setResourceExtension(String value) {
    	resourceExtension = value;
    	validateControls();
    }
	/**
     * Returns a <code>boolean</code> indicating whether a container name represents
     * a valid container resource in the workbench.  An error message is stored for
     * future reference if the name does not represent a valid container.
     *
     * @return <code>boolean</code> indicating validity of the container name
     */
    protected boolean validateContainer() {
        IPath path = containerGroup.getContainerFullPath();
        if (path == null) {
            problemType = PROBLEM_CONTAINER_EMPTY;
            problemMessage = IDEWorkbenchMessages.ResourceGroup_folderEmpty;
            return false;
        }