I'm sure the VC-90 TBM's rudder is white, it looks a touch darker than the fixed stab stripe but this is likely down to lighting angles.
Thanks for the date Whiteman, it helps with my historical research on the various escort carriers for these aircraft. Based on this I have decided to skin the CVEG-24 TBM based on the USS Santee. While VC-90 was aboard the USS Petrof Bay prior to the end of the war, the ship was in transit to Pearl Harbor rather than sent into combat. The USS Santee though was stationed off Okinawa for a few weeks in July while the island was still under air attack. Also it ties in with Whiteman's VF-24 F6F-5 skin which has a similar scheme.