Red. The color of love, the color of passion, the color of adultery, the color of power, and the color of...martyrdom? It's true. When Mary Queen of Scots went to face her death by execution, she performed a symbolic strip tease; pulling off her outer garment to reveal a scarlet dress beneath. Her dress sent a clear message to faithful supporters, she was sacrificing her life for their cause.  (I'm going to have to watch that Margot Robbie movie this weekend).  Red has always been a special color. In medieval times, the seeds and berries needed to imbue textiles with shades of...