[chore] icon and opengraph stuff

_includes/meta-generic.html

@@ -1,14 +1,11 @@
 <link rel="stylesheet" href="/assets/main.css"/>
 <meta property="og:url" content="https://secureblue.io/{{ current_page | replace: "/", "" }}"/>
 <link rel="canonical" href="https://secureblue.io/{{ current_page | replace: "/", "" }}"/>
-<meta name="theme-color" content="#00293d"/>
-<meta name="theme-color" media="(prefers-color-scheme: light)" content="#00293d"/>
-<meta name="theme-color" media="(prefers-color-scheme: dark)" content="#00293d"/>
+<meta name="theme-color" content="#241f31"/>
 <meta name="color-scheme" content="dark light"/>
-<meta name="msapplication-TileColor" content="#00abff"/>
 <meta name="viewport" content="width=device-width, initial-scale=1"/>
 <meta property="og:type" content="website"/>
-<meta property="og:image" content="https://secureblue.io/opengraph.png"/>
+<meta property="og:image" content="https://secureblue.io/assets/opengraph.png"/>
 <meta property="og:image:width" content="512"/>
 <meta property="og:image:height" content="512"/>
 <meta property="og:image:alt" content="secureblue logo"/>