Well since Stardock has said they are not going to re-add Umber I decided to play around with changing their looks a bit. Right now they seem to be too similar to Trogs. I decided to give the Urxen race a Beastmen look because it fits them and is very different from the more Orcish Trogs. To do this I gave them some beards and horns. I also changed their skin color to a browner shade.
The newest version of this mod adds a completely new race instead of editing the existing Urxen race. Thus some bugs in the first version have been fixed. This also means that you can play with factions based off both the new and old Urxen races. You don't even necessarily have to use the new race as a replacement. You can just create a custom faction off of them with it's own history.
In the current version I have created a custom faction and sovereign for Umber. They will require my Faction Trait Mod to work. If you don't want to use them you can just create your own faction and sovereign.
*Skin color has since been changed.
Now Stormworld compatible.
For FE version 1.01
To install place all the xml files in the mod folder. Remove any outdated files.
If you want to play with both new and old Urxen then do not add the DarOver file which changes the looks of existing champions. You can change the display name of the new race in the Race_Type_DarUrxen file.