A bunch of questions about modern CN

[Schraddel]

Hello,

as i wrote in my layout thread, i had need for modern rolling stock.

The seed was laid here:

2016 photographed in Jasper/AB

So i decided when there are modern era is estimated at the Fremo meetings of the SWD, then i go Canadian.
Meanwhile some modern Diesel locos of CN prototype had accumulated at home:


A pair of GP40-2W with the so called map scheme painting.
My questions:
When this scheme appeared the first time?
Was it very common?




The same questions for the zebra stripes painting.
When this scheme appeared the first time?
Was it very common?





And for the www.cn.ca scheme painting.
When this scheme appeared the first time?
Was it very common?





Fished a cheap ALCO out of the bay with an old CN scheme painting.
When this scheme appeared the first time?
Was it very common?


Thank you in advance.


Lutz

Edit: Rechtschreibefehler (orthography mistakes)