Sepia, Polaroid, Vignetting Sepia again. The realm of ironic picture-sharing services suffer from a lack of imagination on the filter front -- which is why everyone's snaps are shot with the same three tints. Repix, on the other hand, is an iOS app that wants to bring some creativity back to food pictures with a set of creative brushes that you can apply to the limits of your artistic talent. Rather than uniformly applying the effects, you finger paint them onto your original image. If you're familiar with iPad app