added nord bluish theme

src/web/assets/themes/nord-bluish.css

@@ -0,0 +1,29 @@
+:root {
+  /* body background */
+  --bg-1: #2e3440;
+  /* background of the content */
+  --bg-2: #3b4252;
+  /* input suggestions background */
+  --bg-3: #434c5e;
+  /* mostly borders */
+  --bg-4: #5e81ac;
+
+  /* main text color */
+  --fg-1: #eceff4;
+  /* search result description */
+  --fg-2: #e5e9f0;
+  --fg-3: #d8dee9;
+
+  /* focus outline */
+  --accent: #88c0d0;
+
+  --link: #88c0d0;
+  --link-visited: #5e81ac;
+
+  --positive: #a3be8c;
+
+  --syntax-string: #8fbcbb;
+  --syntax-special: #5e81ac;
+  --syntax-constant: #b48ead;
+  --syntax-comment: #d8dee9;
+}

src/web/mod.rs

@@ -67,6 +67,13 @@ pub async fn run(config: Config) {
                 "text/css; charset=utf-8",
             ),
         )
+        .route(
+            "/themes/nord-bluish.css",
+            static_route(
+                include_str!("assets/themes/nord-bluish.css"),
+                "text/css; charset=utf-8",
+            ),
+        )
         .route("/opensearch.xml", get(opensearch::route))
         .route("/autocomplete", get(autocomplete::route))
         .route("/image-proxy", get(image_proxy::route))

src/web/settings.rs

@@ -32,6 +32,7 @@ pub async fn get(
                             select name="stylesheet-url" selected=(config.ui.stylesheet_url) {
                                 { (theme_option("", "Ayu Dark")) }
                                 { (theme_option("/themes/catppuccin-mocha.css", "Catppuccin Mocha")) }
+                                { (theme_option("/themes/nord-bluish.css", "Nord Bluish"))}
                             }
 
                             br;