Reply #9: It had nothing to do with clothing.

[PartTimeSatanist]

Crusaders were by and large about looting and/or pillaging. It was all about quick profit, trade routes, and favors. Simple as that. Sure, skin color probably played a small part but in reality the whole Muslim vs. Christian thing rarely entered the picture. If you resided in a rich province, you were a prime target for Crusader raids. Didn't matter if you were Christian, Muslim, or Pagan. Heck, Crusaders spent more time bickering and fighting over loot than they did fighting the heathens. Pretty much like the situation in modern day Iraq. European, North/South American, and even Asian Crusaders, bickering on who gets what, and how much of it.