div.captcha-red {
    width: 92%;
    margin: 0px auto;
    padding: 5px;
    border: 1px solid #a94442;
    color: #a94442;
    background: #222222;
    border-radius: 5px;
    text-align: left;
}

div.captcha-green {
    width: 92%;
    margin: 0px auto;
    padding: 5px;
    border: 1px solid #24a322;
    color: #24a322;
    background: #222222;
    border-radius: 5px;
    text-align: left;
}