Why is IBM called Big Blue?
From: http://en.wikipedia.org/wiki/IBM Big Blue is a nickname for IBM; several theories exist regarding its origin. One theory, substantiated by people who worked for IBM at the time, is that IBM field reps coined the term in the 1960s, referring to the color of the mainframes IBM installed in the 1960s and early 1970s. “All blue” was a term used to describe a loyal IBM customer, and business writers later picked up the term.[12][13] Another theory suggests that Big Blue simply refers to the Company’s logo. A third theory suggests that Big Blue refers to a former company dress code that required many IBM employees to wear blue suits.