input radio change background color css code example

Example: change radio button color

input[type='radio'] {
  -webkit-appearance:none;
  width:20px;
  height:20px;
  border:1px solid darkgray;
  border-radius:50%;
  outline:none;
  box-shadow:0 0 5px 0px gray inset;
}

input[type='radio']:hover {
  box-shadow:0 0 5px 0px orange inset;
}

input[type='radio']:before {
  content:'';
  display:block;
  width:60%;
  height:60%;
  margin: 20% auto;    
  border-radius:50%;    
}
input[type='radio']:checked:before {
  background:green;
}