.wy-side-nav-search {
    background-image: url("background.png");
    background-repeat: no-repeat;
    background-size: contain;
    background-position: top;
    background-color: #ea7222
}

.wy-side-nav-search input[type="text"] {
    border-color: #ea7222
}

.wy-side-nav-search > a, .wy-side-nav-search .wy-dropdown > a {
    color: #ea7222
}