If you mean the GBRTT web site, there's nothing there on structure and branding (because it has not been decided yet).
The station branding might be implemented like that.
It will be up to Peter Hendy & co to decide these things, once the business model for GBR is known.
Admittedly he was Chair of GBRTT so that is where he might start.
I was referring to this post quoted below which seems quite advanced, does it not?:
I've looked at the Great British Railways Transition Team website.
Trains will appear in a dark blue, red and white livery, the proportions of which vary according to the service branding which I would designate as Intercity, Regional or Commuter.
Intercity trains will appear in a predominantly white livery with window bands in blue.
Regional trains will still be predominantly white, but have an additional blue band under the windows.
Commuter trains will be predominantly painted blue.
Contrast details for people with visual disabilities, door surrounds will be white, doors painted red. Yellow and red cantrail lines for 1st class and catering respectively, plus branding near doors applied.
Double arrow logos will appear on cab sides and cab ends. "Legal lettering" for concessions located in panel on bottom right side of carriages.
Additional branding alongside double arrow logos for sponsoring transport authority.