Hi,

We just installed a new front door in our 1838 brick cape. We chose a fir grained fiberglass door with 6 lites that is very similar to the 2633 you mention in your post. Ours is also painted black on the exterior. I'm not sure it is truly of the right time period, but we are very happy with the privacy as we only sit 14' from the sidewalk.

I prefer the 2614 for your more formal Colonial, but to fit with the timeperiod you should have the single glass divided into 6 lites. You can also get wavy glass that resembles handblown older glass and would give more privacy. The black or even a charcoal gray would look very nice and complement many colors of siding. You could also browse Google Images for doors for your style of home.

Glass in Colonial era front doors was very rare. Glass lights would usually be above or to the sides of a 6 or 8 raised panel door or on all sides.

Here is a good reference for colonial doors.

Here is a link that might be useful: Architectural Details from Old New England Homes