You do have to be very careful about patterns, no matter who you are. This is not a question of whether something looks good on you (as we saw with Mary Landrieu's flowered scarf). Some patterns actually interact with the pixelization of your image as you move and create weird colors. For this reason, there are certain patterns you should avoid ever wearing on television:
Chevron stripes, as Linda Murkowski did on the Senate floor recently:
Maybe eventually HD television will allow these patterns to re-enter our television appearance wardrobe, but for now, restrict them to office-only days!
(Glen plaid image by Kaushik Gopal, houndstooth image by Magnus Overengen)