Yet, ubiquity has not brought consistency. Each new generation of
a product seems to bring with it a slightly different take on
space gray. Those with large device collections have noted
the discrepancies between shades, and discussions brew online
over the term’s exact definition.
While subtle variations in material, texture, lighting, and even
the shape of a product can play tricks on the eyes, every device
Apple currently offers or has produced in space gray can be
grouped into one of several loosely defined categories. Below,
we’ve cataloged and categorized the vast universe of Apple’s
recent dark material finishes in an attempt to unravel the
mysteries of space gray.
Unsurprisingly, I found this article a lot of fun. Certainly seems comprehensive.