I googled for a premade base class definition for the Gui configs and didn't get a decent hit, so for anyone else wanting base definitions for their GUI projects, I hope you find this useful
BASE DEFINITIONS
Correct as for A3 v1.50
It's a bit messy, was quickly done but should get you up and running
Just mass edit the "MyTag_" and replace it with your own tag and your good to start inheriting from
and define your own default colours
COLOUR DEFINITIONS
I also found this in my archives, I have no idea who made this, which is a shame because it must have taken a while to enter all these values
and it would have been nice to pass on the credits.
Hopefully someone will find this useful