What kind of earrings are these?

-ive seen them like in mini marts they come in different colors ive only seen solid colors like only white or green



http://www.google.com/imgres?q=spike+earrings+colors&hl=en&biw=1280&bih=709&gbv=2&tbm=isch&tbnid=NhFa1bTeOXfgbM:&imgrefurl=http://www.allterrainlandcorporation.com/Split-Hooks.html&docid=KM-e2MocaKYVrM&w=170&h=170&ei=xAsuToKoK5K8sQPGks0F&zoom=1