.wpcf7 input[type="submit"] {
    background-color: #6b4a12 !important;
    color: #ffffff !important;
    border-color: #6b4a12 !important;
}

.wpcf7 input[type="submit"]:hover,
.wpcf7 input[type="submit"]:focus {
    background-color: #49320c !important;
    color: #ffffff !important;
    border-color: #49320c !important;
}