librex-extra/static/css/ubuntu.css

:root {
    --main-bg: #2C001E;
    --main-fg: #FFFFFF;

    --result-link-fg: #84de32;
    --result-fg: #a2a08e;

    --button-bg: #5E2750;

    --special-result-border: border 0;
    --special-text-background: #333333;
    --special-text-color: #FFFFFF;

    --search-container-text-color: #f2efd3;
    --search-container-background-color: #77216F;
    --search-container-background-border: #E95420;

    --search-form-background-color: #333333;

    --border: #77216F;

    --footer-fg: #f2efd3;
    --footer-bg: #5E2750;

    color-scheme: dark;
}