-RM-321-MR-FiberDisplay: ROI Coloring is enabled even if there are no ROIS
In the FiberDisplay module, ROI coloring is enabled by default when the module gets created. If there are no ROIs, fibers are rendered in white; fiber colors are ignored completely until the respective property is deactivated. The module needs to check for ROIs and initialize the property accordingly.
(from redmine: created on 2014-01-16, closed on 2014-01-16)