Cosmetic defects are generally not covered under Apple’s standard warranty, nor are they ordinarily covered under AppleCare+. This includes issues such as scratches, dents, scuffs, surface marks, fading, discoloration, or other changes in the external appearance of the device, provided that the device continues to function normally.
Apple is not an exception in this regard. Standard warranties offered by virtually all major smartphone manufacturers are intended to cover manufacturing and functional defects, not cosmetic issues such as scratches, dents, fading, discoloration, or changes in appearance.
The fundamental purpose of a product warranty is to address manufacturing defects and functional failures, rather than changes in appearance resulting from use, handling, environmental exposure, or subjective perception. Cosmetic imperfections, by themselves, do not necessarily indicate that the product is defective or that its performance or reliability has been compromised.
This becomes particularly relevant when the complaint concerns a change in the perceived colour of the device. Colour is inherently subjective and can be influenced by lighting conditions, viewing angles, surrounding colours, photography, display settings, reflections, and individual visual perception. What one person may perceive as a pinkish or reddish tint, another person may perceive as a different shade altogether. Therefore, simply describing a device as having "changed colour" does not, by itself, establish the existence of a manufacturing defect.
For a colour change to reasonably be considered a manufacturing defect, there would need to be some objective and demonstrable evidence—for example, a documented material or coating failure, abnormal chemical reaction, manufacturing inconsistency, or a measurable deviation from the product's specified finish. Without such evidence, a difference in perceived colour remains essentially a cosmetic and subjective observation, rather than conclusive proof of a manufacturing defect.
It is also important to distinguish between cosmetic deterioration and functional deterioration. A scratch, dent, fading, or perceived change in colour may affect the aesthetic appearance of a device, but it does not necessarily affect its operation, performance, structural integrity, or reliability.
In short, appearance alone should not be equated with a manufacturing defect. There needs to be objective evidence demonstrating that the change originated from a defect in materials or manufacturing, rather than normal wear, environmental conditions, handling, or differences in individual perception.