Light gray, not white. LIRR revised the paint scheme on the passenger cars over the years. Here's an example with the stripe thru the windows:
And prior to retirement the last scheme was the stripe below the windows - this one has the lettering though:
Please note in this above shot the white of the GP38-2 does not match the light gray of this P72. Also observe the car coupled to it at left has a window stripe.
At the end of their service they only had the stripe with the 'M' or 'MTA ball' logo at the end:
And a freshly overhauled parlor in the red stripe scheme:
Thanks so much for the information. Still wondering why MTH would produce pure white cars. Perhaps I should weather mine with something that would come closer to these photos.
Again, Thanks For Sending
Michael