Magnum019:
There was a Custom Built P42a that sold for 283.00 on Ebay which was very well done, may have a Youtube feature on it as their was a small Video on how the lighting system functioned. This person had it DCC equipped, Headlight, Ditch light and operating Red lights just above the Headlight.
Correction, He had it on his Photobucket.
Magnum
Thanks ! - That was MY engine ! 
Athearn did a couple short runs of the VIA engine in six different numbers. There were some discrepancies in the Athearn unit's details and color, but over-all pretty decent.
There has been a lot of debate over which model color appears correct. The problem being the fact the real engine is painted with a Dupont automotive type metallic. This metallic finish takes on an appearance anywhere from dark green to blue depending on how the light hits it. What was determined to be an accurate representation of this color was "Chezoom Teal" which can be found in Testors line of model car paints under the Boyds section. The color has an extremely fine metallic to it which represents the real engine very well.
I forgot I still had the pictures and video in my Photobucket account, so here they are if anyone is interested ....



And a quickie video showing the lighting features ....

Mark.