Are you assuming "TPU == clear?"
Some of my favorite cases have been made of Incipio's "NGP" (really TPU) material in black.
iPod touch 5th gen - Incipio Frequency
Absolutely perfect all around. Very slim. Buttons had perfect, responsive, clicky tactile feedback.
iPhone 5c - Incipio NGP
Nice. Functional. Buttons feel good (not perfect).
iPhone 5/5s - Belkin Grip Candy Sheer
Perfect. The black/green color combination was way nicer than I thought it would be.
iPhone 6 Plus - Incipio NGP black
Perfect except that I had to use a razor blade to make invisible cuts beside the volume and lock buttons so they had good tactile feedback.
iPad mini - Incipio NGP
Perfect except that I had to use a razor blade to make invisible cuts beside the volume and lock buttons so they had good tactile feedback.
iPad mini 2 - Incipio NGP
(revised for slightly increased thickness of new mini 2 and extra microphone cutout)
Perfect except that I had to use a razor blade to make invisible cuts beside the volume and lock buttons so they had good tactile feedback.
All of these are TPU, feel great, and wear nicely.