This, too, may be one of those cases where one person will readily do what another never would, but I have in fact worn my red PC to black tie events. In some circles it is not unusual for someone to wear a dinner jacket that is not black or white. I guess it depends on where you go. I think the colorful nature of tartan undermines any ideas of black tie as all black and white.Click image for larger version. 

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ID:	14491 But, anyway, I am attempting to upload a couple of shots of my red PC.