Funny. I am not a "New Haven fan", or a diesel guy, or one who likes bright colors usually, but I think that the NH had the most attractive and elegant and strange diesel and electric paint schemes of any RR. I live nowhere near that part of the US, have never been to New England (to Manhattan a couple of times - the closest to it), but whoever was in charge of that for the NH must have had a lot of masking tape and a lot of paint in inventory.
The "strange" scheme would have to be the McGinnis, of course - but I like it anyway.
I have one of MTH's big streamlined EP-3 (or EP-4; I forget the number) units in the dark-ish green with the almost 19th Century-looking striping in Dulux gold.
The locos with the thin horizontal pin stripe scheme are my favorites, especially the DL-109's.
Even the NH switchers were entertaining to see.