John Calhoun created color pickers at Apple such as HSV picker, HTML color picker, and crayon picker based on the need he perceived for artists and web users.
Apple shipped these color pickers without any marketing or design requests as engineers like Calhoun, who were also users, often had an intuitive sense of what users wanted.
Calhoun thought the inclusion of a poem in one of the color pickers was a humble Easter egg but failed to consider Apple's strict copyright policies, leading to concerns about copyright violation.
Some playful Easter eggs, like worn down or broken crayons in the crayon color picker, were included by Calhoun, showcasing creative touches that did not impact functionality.