Looks good, thanks for the info. Should have found that one on my own! Think I was looking under the .Mask items instead of the DefaultTextStyle item.
One more issue:
I have an LayerOverlay that I am adding InMemoryFeatureLayers to. Each for them in an arrow image that is loaded as a GeoImage, with the rotationAngle set. Then I add some text behind the arrow via the DefaultTextStyle.
Sometimes this works without a problem. Other times, however, the text does not always show. Panning the map, or zooming in and out cause the text to appear and disappear, but it doesn't happen in a consistent way. I have noticed that it usually starts to happen after 3 of these InMemoryFeatureLayers have been added. Any ideas on what might be going on?