Pullman car co. I am not sure
Prr LW Pullmans I am very sure... See below
Internal colors depended on era, just like external
Re: room to room, colors were same (bdr A-F)
If car had multifunctional floor plan (6bdr lounge) the colors would vary (lounge= color x) bdrms = color y
Also different color on walls (lower and upper) in some cases
In most cases things were neutral
However, neutral in 1949 on prr is a bit unsettling to the eye today
Just like 1970 shag carpet is unsettling unless nits 1970