I prefer clear cases, but all the clear cases I've bought don't stay clear. For my 5s, I had a Switcheasy Numbers white matte case. After six months it was an ugly brownish green color. Then I bought an SGP Ultra Hybrid crystal clear case, but the TPU bumper areas have started to turn yellowish brown. I keep my hands very clean. I'm almost a clean freak. But my clear cases still changed color. I'm picking up an iPhone 6 soon. Do you guys know of any clear cases that do not change color or pick up dirt over time?