@Keyframes  changecolor {
  0% {
    margin-left: 100px;
    background:green;
  }
  40% {
    margin-left:150px;
    background:orange;
  }
  60% {
    margin-left: 75px;
    background: blue;
  }
  100% {
    margin-left: 100px;
    background: red;
  }
}
div {
  width: 300px;
  height: 200px;
  background: red;
  color:#fff;
  margin: 20px auto;
}
div:hover {
  animation: changecolor 2s ease-out .2s;
}