Dont know what a rosy red is but would asume its a small red fish.
12 cents a pop can add up quick so if the red color is what your after you can die your shiners with food coloring and get most any stanard color you wont.
Just put it in their water and before long ( a few hours that is) waa-laa, red shiners, blue shiners, gold shiners, ect. and it wont hurt em a bit. Ive seen em but never done it my self this guy I worked with in Monroe showed me and does this to all his bait.
Its Just Something About That BUMP