So I brought my father to lowyat to replace his HTC desire to Moto g last Tuesday. He contemplated with an xperia z1 while waiting for the stock to arrive around 6pm. I had to go back earlier and to my surprise, he bought a silver htc one 32GB.
That night, we noticed the camera gives purplish discolouration on low light. This is unacceptable. I went on xda-dev and there is 60+ pages of camera problem thread. This must be a widespread issue.
So we went back to the shop at lowyat and hoped for a replacement. The guy didn't ask much, he went somewere else and got a replacement unit but it is a red colour!
Unfortunately, the camera purplish discoloration is still present. The shop refuses to swap back my father's original silver unit. He suggested us to got to htc service centre.
We went there and the lady at the desk told is it is a problem that has persisted since launch. Swapping with a different unit would not make a difference. That is puzzling from HTC side. I'm sure HTC awares of such problem and should work to getting a working camera module to replace the defective one.
So we sent the red htc one for repair. We were promised for collection this coming Monday around lunch time.
tldr: defective camera. HTC gives no **** about it.
Welcome to the club. Happy waiting at least one month.