From how I understood it, the green numbers are the bonuses from the facilities and those are temporary improvements, but the boosts through the weekly activities are supposed to go towards their stats permanently. If they were all temporary it would make no sense to pick an F2 driver cause they would never be truly competitive with the f1 drivers.
1. A detailed description of the issue. Please include any error codes here. I upgraded my aerodynamics facility with a tier 1 upgrade (quality control) and the upgrade completed, however, I did not get the spec 1 upgrade options that you receive for making a spec 1 facility. 2. Platform PC 3. What version of the game you are using (Shown on the start screen in the bottom left corner of the screen) 1.03 4. Game-mode? My Team 5. What are your replication numbers? Minimum test attempts are 4. Please also add EXACT replication step