I just had Galaxy S6 edge for only around 48h and the white colour around the camera ring started to fade. The problem started to appear from the first 24 hours and it’s such a shame for a high-end phone like S6 edge to have a problem like that. I just had it laying on the table without doing any extreme things just laying on the table.
More photos and comments (Greek): http://goo.gl/GfyOMH