Carbon From Monkeys Dream
Carbon is a a really classy and cool looking design from Monekys Dream Developer that features a nice index dial the colors of which can be changed just by long pressing on the watch face. Also the watch face offers some custom shortcuts that you can assign according to your desire.
Developer of this face has provided many coupons that you can check via the following links. Once again these coupons are limited in number so make sure you try your luck asap.