I've been using the same type pick for over 20 years. They are black, fairly stiff, and the back half is diamond crosshatch texture. They used to be called Mel-Bay picks, but some other company bought the design years ago. I'm afraid I'm a little like Dumbo and the magic feather when it comes to my black Mel-Bay picks.
Oh, and here's a tip for filing away a broken section of a pick in an emergency: cardboard. If you use cardboard to do the repair, you get a polished edge because the coefficient of friction is so high that it melts the plastic a little bit. This works much better (and faster) than an emery board or fingernail file. Use long strokes, fairly fast, and in the direction of the plane of the pick.