Add: auto dark theme to django admin page

archivist/core/templates/admin/base.html

@@ -0,0 +1,79 @@
+{% extends 'admin/base.html' %}
+
+{% block extrahead %}{{ block.super }}
+<style>
+
+@media (prefers-color-scheme: dark) {
+
+    :root {
+        --primary: #62095c; {% comment %} #9106c4; {% endcomment %}
+        --primary-fg: #eee;
+        --body-fg: #eeeeee;
+        --body-bg: #040b1e;
+        --body-quiet-color: #e0e0e0;
+        --body-loud-color: #ffffff;
+        --breadcrumbs-link-fg: #e0e0e0;
+        --breadcrumbs-bg: var(--primary);
+        --link-fg: #81d4fa;
+        --link-hover-color: #4ac1f7;
+        --link-selected-fg: #6f94c6;
+        --hairline-color: #272727;
+        --border-color: #353535;
+        --error-fg: #e35f5f;
+        --message-success-bg: #006b1b;
+        --message-warning-bg: #583305;
+        --message-error-bg: #570808;
+        --darkened-bg: #0f1e31;
+        --selected-bg: #1b1b1b;
+        --selected-row: #00363a;
+        --close-button-bg: #333333;
+        --close-button-hover-bg: #666666;
+        
+        --header-color: #fff;
+        --header-bg: #9106c4;
+    }
+}
+
+@media (prefers-color-scheme: light) {
+
+    :root {
+        --primary: #79aec8;
+        --secondary: #417690;
+        --accent: #f5dd5d;
+        --primary-fg: #fff;
+        --body-fg: #333;
+        --body-bg: #fff;
+        --body-quiet-color: #666;
+        --body-loud-color: #000;
+        --header-color: #ffc;
+        --header-branding-color: var(--accent);
+        --header-bg: var(--secondary);
+        --header-link-color: var(--primary-fg);
+        --breadcrumbs-fg: #c4dce8;
+        --breadcrumbs-link-fg: var(--body-bg);
+        --breadcrumbs-bg: var(--primary);
+        --link-fg: #447e9b;
+        --link-hover-color: #036;
+        --link-selected-fg: #5b80b2;
+        --hairline-color: #e8e8e8;
+        --border-color: #ccc;
+        --error-fg: #ba2121;
+        --message-success-bg: #dfd;
+        --message-warning-bg: #ffc;
+        --message-error-bg: #ffefef;
+        --darkened-bg: #f8f8f8;
+        --selected-bg: #e4e4e4;
+        --selected-row: #ffc;
+        --button-fg: #fff;
+        --button-bg: var(--primary);
+        --button-hover-bg: #609ab6;
+        --default-button-bg: var(--secondary);
+        --default-button-hover-bg: #205067;
+        --close-button-bg: #888;
+        --close-button-hover-bg: #747474;
+        --delete-button-bg: #ba2121;
+        --delete-button-hover-bg: #a41515;
+  }
+}
+</style>
+{% endblock %}