Thesecondexplanationsuggeststhatthesewordsdon't enterlanguageuntilhumanscouldmakethemreadbeingtheeasiestandmostaccessiblecolorbecauseyoucouldjusttake a pieceofdryclayanduseitas a crayon.
Evenifyoulookat a colorpickerinPhotoshop, it's clearthat a darkornavyblueisn't actuallythatfarfrombeingblackandisquitefarfromotherHughes, whichwewouldstillcallblue.
Whatthismeansis, oncewehave a newwordforourcolor, there's a feedbackloopinthebrain, andthisexaggeratesthedifferencesbetweenthosecolors, especiallyattheborderareasbetweenthem.
Honestly, it's kindoflikewhen I learned a newEnglishword, andthensuddenly I heariteverywhere I seeiteverywhere, butthetruthis, I probablycameacrossthatwordbeforebutjustdidn't noticeit.