The color variants can be endlessly combined with case covers available in the same visual spectrum. (ebookfriendly.com)
An example falling in the subtler visual spectrum is Sam Moyer's Marshall Field's, 2015, a bronze frame holding inset craggy marble slabs. (kavigupta.com)
Monitors are still a long way off from displaying the full visual spectrum (although modern cameras are a lot closer to being able to capture it). (howtogeek.com)