I chose a purple Tantus Curve for my first pegging dildo. I went with colors and semi-realistic because I wasn't quite comfortable with my bi-side and felt self-conscious about wanting a realistic. Though I really do enjoy the shimmering shifting colors of the pearlescent Curve. The mixed colors of the O2 Revolution look like they would be very pleasing to gaze at.
After long conversations with my wife I am comfortable with the fact that I really want a realistic and we both want an Outlaw. We both love the looks of the head and its shape more than any other realistic. An O2 Revolution is on the way, another color, but a particular size and squishiness was the number one priority. Something half way between the Curve and the Outlaw. Couldn't find a realistic in the desired dimensions or I would have went with it.
Even though I can't really see them in use, I agree with Qliq, about staying close to the true sexuality experience. We are pegging after all, to satisfy my bi tendencies, while protecting and maintaining a monogamous, hetero, quarter century marriage.