Maybe Engineer Spike would add his thoughts also, but...
Probably not going to happen. Canadian Pacific is slowly repainting and renumbering "heritage" units into full CP paint for the sake of "branding", or uniformity, following a unit's major overhaul. CP doesn't want to been "seen" as the D&H or SOO Line. CP doesn't spend money on paint for the sake of having shiney units, they only repaint during major work. I recall hearing it costs around $200,000 to repaint and renumber a unit. Witness all the SOO and ex-Milwaukee Road units still running around still in their factory paint jobs. And those units only get the full CP repaint when they're shopped for major work/rebuild. CP only spends money when it's required. Paint isn't required to make the loco perform. I highly doubt CP would ever consider repainting a perfectly good C44AC into a heritage unit.
While it would be nice to see "heritage" GE's painted up in D&H, SOO, Milwaukee Road, and MN&S paint, CP could spend that million dollars elsewhere ... like the DM&E/IC&E properties.