If this is a new system (equipment that you have never used), it's quite normal not to have an accurate knowledge of the boil-of rate. Everybody's is different, and it needs to be adjusted based upon your experience with this equipment.
For instance, my system loses approximately 2.5 to 2.75-gal per hour. For most people, that's a lot. For mine, it's normal I start at 13.25-gal and end up at 10.5-gal (US gal).
As for the color... You're probably looking at a large volume of wort (e.g.: in a carboy or bucket), but the final product will be lighter due to less width in the glass. A carboy is 10-12" wide while a pint glass is about 3" wide.