RIO's May It Be Silver Bead - When it comes to fishing a mayfly nymph in a river it's hard to beat baetis and PMDs. Mayflies are very slim so RIO's May It Be is tied with alternating vinyl and wire to keep the segmented body very slim. We offer both body colors with three of the most popular tungsten bead colors (copper, gold and silver) so anglers can find the best match for the water and light conditions they are fishing. You can fish this while Euro Nymphing, indicator fishing, or as a dropper under your favorite foam dry.