Just brewed my first Rye IPA yesterday. Denny, I largely followed your recipe. I used 71.9% 2-Row, 17.9% Rye, 6% Dingeman's Special-B (because it's my favorite crystal right now), 4% Wheat, and 0.4% Carafa Special.
The wort had a beautiful red hue to it, which I was shooting for. But my question is: Does Rye contribute anything to color? Or, as I suspect did I get it mostly from the tiny bit of Carafa?