We drove around town (again) to look at the various color options (our roofers gave a list of houses they've done in the past). It was somewhat helpful; but, just like paint, the color looks so different when there is a lot of light vs. when there is shade. It is hard to know until you see it directly on your own house.
So, I took the color swatches they had online and played around with them in Adobe Illustrator. I realize it isn't a true representation (I still can't get the shingles to tilt in the software - very frustrating). So here are the leading contenders:
Option #1: Oyster Gray
Fortunately, this will be over in a week and decisions will need to be made probably at the eleventh hour! :)
UPDATE: To see the color we chose, go here.