Preventing CGA revisionist history

There is a bit of a spat going on in a few forums regarding color index #6 of IBM CGA. The old-timers know that it is brown from experience and existing working hardware; the newbies (writing or using emulators) are unwilling to accept that and are instead making CGA palettes with dark yellow instead of brown. Can anyone give me the history on why #6 is brown? Was it a design mistake, or intentional? Is it a property of the monitor or something? I can't find anything of substance to offer the newbies to convince them otherwise; digital photos can be accused of being doctored or miscalibrated (and yet is a digital photo showing "yellow" that started this whole thing). About the only thing I can think of to offer as proof is that the text colors in the VGA palette show brown, and IBM wouldn't have done something like that by mistake -- or were they perpetuating a mistake? -- Jim Leonard (trixter at oldskool.org) http://www.oldskool.org/ Want to help an ambitious games project? http://www.mobygames.com/ Or check out some trippy MindCandy at http://www.mindcandydvd.com/