var ind = 0
function qqq() {
    var vis
    vis = document.getElementById("tmp")
    if (ind==0){
  vis.style.color = "#39B000"
  ind=1
    }
    else if (ind==1){
  vis.style.color = "#CC0000"
  ind=2
    } 
    else {
  vis.style.color = "#6E6B6B"
  ind=0
    } 
}
window.setInterval('qqq()',500)