body[data-county="derry"] {
    --hs-primary: #ED2224;
    --hs-accent: #FFF;
    --hs-accent-2: #ED2224;
    --hs-link: #CC3333;
}

body[data-county="derry"] #header {
    background-image: url(/styles/images/head/derry.gif);
}