Several smartwatch users began reporting a green tint appearing on screens after updating to watchOS 9.5, as noted by the MacRumors portal. The shift from a traditional black interface to a greenish hue was observed across various watch models, not just the newest devices. The most noticeable areas were the black password entry screen, the control center, and the stream of notifications. In terms of affected models, Apple Watch Series 8 owners and older generations reported the issue, while the Apple Watch SE and Apple Watch Ultra appeared to be less affected, according to user feedback. (MacRumors)
The origin of the issue remains unclear. Many users point to a software bug introduced with watchOS 9.5 rather than a hardware fault, given the timing noted after the update last week. Some users reported a partial remedy by restarting the watch, though this did not guarantee a permanent fix for everyone. (MacRumors)
Apple has previously addressed similar color-related problems on iPhones tied to software glitches, which gives some grounds to expect a fix in a forthcoming system update. The company appears to be focusing on watchOS 9.6, which is in development, but no official release date has been announced yet. (Apple Support updates)
In a separate tech note, it was mentioned that users elsewhere reported Windows 10 issues described as blue screens following a system update. This reference is included to highlight how software updates across devices can introduce new display quirks that share an underlying theme of unexpected color or screen behavior. (Tech news aggregators)