Best way to validate what facet your on is with the mouse cursor. It shows gold in Trammel and Silver/Gray in Felucca.
You won't get the "Felucca effect" when you go between the two facets, Trammel and Felucca, with tree canopies on.
If you want Felucca to appear "pretty" you can turn tree canopies on in the uo.cfg file located in C:\Program Files (x86)\Electronic Arts\Ultima Online Classic
Change
TreeCanopies=off
to
TreeCanopies=on
This gets rid of the dead tree looks and changes gravestones to flower, etc.