* {
  background: repeat url("https://i.imgur.com/UepFEiw.gif");
}
body {
  background: repeat url("https://i.imgur.com/qYfKreS.gif");
  animation: fuck 1s linear infinite;
}
@keyframes fuck {
  from {filter: hue-rotate(0deg) saturate(10)}
  to {filter: hue-rotate(360deg) saturate(10)}
}