I argue that everyone can wear every color, in moderation, mixed with other colors. I wear all of them. However, if yellow is my Superman of colors, purple is my Bizarro. When organizing my stash, I found this partially finished Wool Peddler's Shawl, in purple (here modeled as a cat blanket because I feel such apathy about putting it on):
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I have more of the purple yarn, which is Lorna's Laces Fisherman, a 100% soft wool (merino?), worsted weight, in blackberry (you can see the colors here; this blackberry is more muted than the color in the photo). It's a great yarn, very soft and far more durable than Shepherd Worsted. I don't know why more shops don't carry it. In any case, I'm obviously not going to knit another project from this yarn.
Like purple? Want the yarn? Just leave a comment telling me your least favorite color and how it makes you feel. I'll start: Purple. Lethargic. I'll pick a comment at random at the end of the week!