Fictitious CF 7

I am not a railfan per se, but I have seen a CF7 in an Amtrak paint scheme on one of the innumerable times I have been stuck in traffic on the SE Expressway in Boston.  My mind says it was near the washracks on the southern end of the yard.

Wikippedia confims that Amtrak was an early purchaser of CF7's, so there may be a prototype for Athearn's unit after all.