These are live wax worms & not spikes. Although spikes resemble wax worms, the difference is spikes are smaller than wax worms (which can get up to one inch long and are fatter then spikes). The colors are absorbed into the body of the wax worm. The color will last up to 1 hour under water which is longer then anyone should have a wax worm on a hook any how. We offer 7 vibrant blazing colors Red, Green, Pink, Orange, Blue, Yellow and Purple. Our colored wax worms are sold in one color containers of 50 wax worms. Fishermen are using them with great success on the ice and open water. Great bait for Trout, Panfish, Perch, Bass and most all other fish.