I am creating some old-style-looking electric multiple units, in minifigure scale, and the newish 1x3x3 window frame is perfect for these because it matches well the profile of a seated minifigure.
Currently, this window frame is available in just three colours, Bricklink Tan (thank goodness) is a good historic railway colour, pairing nicely with reddish brown, dark red, dark blue and dark green.
The other two colours - dark brown and Bricklink dark purple - are more of a challenge because older two-tone railway liveries usually had the mid-body (including windows) in a lighter colour than the lower body panels.
So, can anyone point me towards old railway liveries for coaches that could make good use of these window frames?