This is the current state of play with 816. I've kept the Bachmann body colour (it's actually moulded plastic rather than painted) and some of the lettering, but have repainted the noses and touched up parts of the blue. The grilles have also had a coat of dirty grey. This still quite a lot of touching up to do.

The biggest transformation has come from painting the moulded headcode boxes surrounds black - the boxes now look the correct size.