Window Coverings

What can be seen in some of the old pictures is that they put a curtain rail straight across the windows, which pretty much ruins the whole effect

The brochure shows something similar, even though in this sample the rails coincide with the sliding door frame which is somewhat acceptable:
http://www.totheweb.com/eichler/brochures/highlands_brandywine/images/page8.jpg

We had something similar in our hose when we bought it (even with a wooden facing around it - it went across the entire rear window facade - abut 30 ft). It was one of the first things we ripped out after moving in, and we never bothered to replace it with something else. We live now without any window coverings in the entire house and we love it!

I saw, however that honeycomb blinds can be custom made in all kinds of odd shapes, so you might want to inquire if they could be made to fit those trapezoid windows:

The back wall of my house, and my next door neighbor's house, have vertical blinds installed across all the windows. Although mine were installed along a straight line, ruining the cathedral effect, he installed his at an angle, cutting each of the 60 or so individual blinds to a precise length to match the roofline of the house.

Blind1
Blind1 Blind2
Blind1 Blind2 Blind3
Blind1 Blind2 Blind3 Blind4
Blind1 Blind2 Blind3 Blind4 Blind5
Blind1 Blind2 Blind3 Blind4 Blind5
Blind1 Blind2 Blind3 Blind4 Blind5
Blind1 Blind2 Blind3 Blind4 Blind5
Blind1 Blind2 Blind3 Blind4 Blind5
Blind1 Blind2 Blind3 Blind4 Blind5
Blind1 Blind2 Blind3 Blind4 Blind5
Blind1 Blind2 Blind3 Blind4 Blind5

You get the idea. The effect is graceful. If I had his patience or skill, I might do the same myself. Perhaps this task is old hat to the professional blind installer, but I'd get some agreement in advance about the accuracy of the cuts. Craig's are probably all within 1/8" of each other.