At this stage, it is unclear whether this is a software or hardware problem. If you own the Xperia Z3 or Z3 Compact, please let us know if you have noticed something similar (post some examples too if you can). So far, Sony hasn’t given an explanation for this but we’ll let update this post if we hear anything official.
Examples of pink shading occurring with select Xperia Z3 and Xperia Z3 Compact handsets
Via Sony Mobile Talk.