Posted by Robert on May 28, 2003
I have always understood this term to refer to those of the finanacial/cultural elite and had recently been told that the origin is from the merchants of indigo from the "new world". Apparently, indigo was one of the many plants that were "discovered" in the Americas, (potatoes, tomatoes, etc.) and its exceptional blue dye qualities were highly desired, making its merchants extremely wealthy and figuratively "blue-blooded". It seems that this term may be older though.