Ertl BR&P Ashford Tower color scheme

I’ve bought one of Ertl’s HO kits for this concrete interlocking tower, based on a Buffalo, Rochester and Pittsburgh prototype. I’m researching the paint scheme for these towers (there were four, at Ashford, Buzzards Bay, Falls Creek and one other location) and have found about seven photos online. From what I can determine: the walls are cream; the roof is terra cotta tile; the roof gutters are green (copper?); the window frames are variously green (the illustration on the kit box), brown, or cream (most recently). I cannot determine the color under the eaves, nor can I determine the staircase color (the staircases have been removed on the still existing towers). Can anyone help me, please?