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
* the container may not exist yet if the user entered
     * a new container name in the field.
     * @return The path of the container, or <code>null</code>
     */
    public IPath getContainerFullPath() {
        return containerGroup.getContainerFullPath();
    }
    /**
     * Returns an error message indicating the current problem with the value
     * of a control in the group, or an empty message if all controls in the
     * group contain valid values.
     *
     * @return java.lang.String
     */
    public String getProblemMessage() {
        return problemMessage;
    }
    /**
     * Returns the type of problem with the value of a control
     * in the group.
     *
     * @return one of the PROBLEM_* constants
     */
    public int getProblemType() {
        return problemType;
    }
    /**
     * Returns a string that is the name of the chosen resource, or an
     * empty string if no resource has been entered.
     * <br><br>