https://www.cinema.ucla.edu/events/2015/11/01/follow-thru-becky-sharp
This is how the UCLA restoration of Follow Thru is credited:
Restored by UCLA Film & Television Archive in cooperation with Universal Pictures with funding provided by the AFI/NEA Preservation Grants Program, The David and...
I tend to think that it would be Universal due to the 1950s MCA acquisition, but I could be wrong. From what I have heard, there are some rights issues with Follow Thru that currently preclude any release.
Going off of my memory, the only surviving two-color features with surviving camera negative elements are King of Jazz (cut for the 1933 reissue), The Toll of the Sea, The Black Pirate, Whoopee!, and Follow Thru.