Hi Doug,
Maybe this image from Patrick would make a good study for the reverse for interiors.
The piece on the left is external, the right side isinternal.
It has less yellowing, possibly from lack of dope/varnish or age and exposure.
It has the "stained glass" look very prominently.
If I lose this it's because of a scheduled power outage.
I will close as the time approaches fast!
I have asked on another thread about the "stained glass" look, I don't believe that there was an answer. That image was off of ebay and I had never noticed this effect before.