Slightly off topic but I travelled a lot between Halifax and Manchester Victoria a lot in the late 80’s and early 90’s, don’t remember ever seeing a (by then I believe) Orange and Brown GMPTE train on the Calder line but regularly it was a Red and Cream ‘Metro Train’ Class 155
You won't have, Leeds-Halifax-Manchester was an RRNE service. 155s or 158s, mainly. I do remember once catching an orange 142 on one of the late trains to Bradford Interchange but either a) it was borrowed or b) my memory is playing tricks.
Back in the early 90s quite a few of them extended to Liverpool Lime Street (advertised at Leeds with the false destination of Edge Hill) as the Chat Moss stopper so you will have seen MetroTrain 158s in Liverpool.
Probably wants it's own thread, but the Network NorthWest thing was a bit of an oddity wasn't it? The logo was added to a handful of 142s and 150s, and appeared on a few station signs, but apart from that it never really caught on.
It never really caught on, trapped between GMPTE and Merseyrail and, to be honest, the wider Regional Railways branding was better anyway.
Same when RRNW changed the stripe from RR blue to green on their 156s when they were refurbished in the early 90s.