Link colors and other standards are mentioned enough to be used as a drinking point during Jakob Nielsen's keynotes. From the drinking instructions originally written by Steve Champeon and Jeff Veen [78] and posted on Nielsen's site:

"If he mentions link colors, drink: once for "blue" once for "purple" three for "red", which nobody who's used a browser since 1993 thinks of as a followed link color, anyway. It's the "active link" color, dammit. "