orgmode-to-gemini-blog/templates/styles_src/tkblog_themes.scss

.theme-mastodon{
    #page{
        background: #4d4c4e;
    } 
    .body-wrap{
        background: #201e22;
        color: #fff;
        a{
            color: #9327ff;
        }
        a:hover{
            color: #9327ff;
        }
        h1, h2, h3, h4, h5, h6{
            color: #fff;
        }
        hr{
            border-color: #fff;
        }
    }
}