A local hobbyist in my area has been gauging interest in having the EZ-Catch shop (on Staten Island; 99% sure its that one anyway) run a custom MTH GP9 Diesel engine in Northern Alberta Railway (NAR) colors. This is following their recent NAR Boxcar and tank car custom MTH offerings.
Often seen on the fabulous Muskeg Mixed train up past the northern lakes and wilderness, NAR diesels used an unique scheme of Grey, Yellow, and royal blue that, to my knowledge, has yet to be replicated in O-scale.
If interested, please contact Gerhardt Klann at: gcklann@gmail.com.
He estimated the price at $519 USD, and the hobby shop will need a minimum 20 orders (he already has a few signed up including myself).
NAR further reading: