You can bind radio-button to label, than you can hide radio-button and style label whatever you like.Example.

div {
    background-color: #444444;
    display: flex-column;
    display:webkit-flex-column;
}
input {
    margin: 10px;
    position: absolute;
    left: 100px;
}
label {
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    margin: 10px;
    display: block;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    -webkit-border-radius: 50%;
    background-color: #ffffff;
    box-shadow: inset 1px 0 #000000;
}
#green {
   border: 8px solid green;
}
#red {
    border: 8px solid red;
}
input:checked + #green {
    border: 8px solid #ffffff;
    background-color:green !important;
}
input:checked + #red {
    border: 8px solid #ffffff;
    background-color: red !important;
}