Here are a couple photos I took in Ambilobe a few years back:
This photo was of an individual to the N/NE of Ambilobe and seems to me like an intergrade between a "typical" Ambilobe and a Diego Suarez:
The problem is, this is an extremely variable locale (as many are). The photo of the Antelobe, or whatever they said it was, looks to me like one of the standard color variations of Ambilobe, however.
Chris