A few weeks late but I'll chime in here:
I'm the Silver 1999 with a grey-primer bonnet that's rolling around Northside ACT these days.
To put names to faces (where possible), the FTOs I've seen around the ACT are:
Silver, driven by (I think) an asian woman, usually along Hindmarsh in the mornings.
White, driven by a dude, recently stopped at the same lights at the corner of Belconnen Way and Eastern Valley Way, again in the morning.
Red, parked near ANU campus.
White, parked in the KFC carpark across from Woden.
Give us a shout if that's you.
