I'm working on bulk data. I have a few hundred GeoTIFF images imported into a QGIS project, and I'd like to modify their layer properties - things like the no-data-value, transparency of certain pixel values, colour map assignments...

But I can't seem to find a way to apply these changes to several layers at once, short of editing the XML file with a global search-and-replace. Is there a way to do this using the GUI?