apache · nsoggia · Mar 10, 2026 · Mar 10, 2026 · Mar 10, 2026 · Mar 10, 2026
diff --git a/docs/error/include/top.html b/docs/error/include/top.html
@@ -6,6 +6,7 @@
   "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html xmlns="http://www.w3.org/1999/xhtml" lang="<!--#echo var="CONTENT_LANGUAGE" -->" xml:lang="<!--#echo var="CONTENT_LANGUAGE" -->">
 <head>
+<meta name="color-scheme" content="light dark" />
 <title><!--#echo encoding="none" var="TITLE" --></title>
 <link rev="made" href="mailto:<!--#echo encoding="url" var="SERVER_ADMIN" -->" />
 <style type="text/css"><!--/*--><![CDATA[/*><!--*/ 

diff --git a/modules/cache/mod_cache_socache.c b/modules/cache/mod_cache_socache.c
@@ -1369,7 +1369,7 @@ static int socache_status_hook(request_rec *r, int flags)
                  "<b><font color=\"#ffffff\" face=\"Arial,Helvetica\">"
                  "mod_cache_socache Status:</font></b>\n"
                  "</td></tr>\n"
-                 "<tr><td bgcolor=\"#ffffff\">\n", r);
+                 "<tr><td>\n", r);
     }
     else {
         ap_rputs("ModCacheSocacheStatus\n", r);

diff --git a/modules/dav/main/mod_dav.h b/modules/dav/main/mod_dav.h
@@ -50,7 +50,7 @@ extern "C" {
 
 #define DAV_READ_BLOCKSIZE      2048    /* used for reading input blocks */
 
-#define DAV_RESPONSE_BODY_1    "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01//EN\" \"http://www.w3.org/TR/html4/strict.dtd\">\n<html>\n<head>\n<title>"
+#define DAV_RESPONSE_BODY_1    "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01//EN\" \"http://www.w3.org/TR/html4/strict.dtd\">\n<html>\n<head>\n<meta name=\"color-scheme\" content=\"light dark\" />\n<title>"
 #define DAV_RESPONSE_BODY_2     "</title>\n</head><body>\n<h1>"
 #define DAV_RESPONSE_BODY_3     "</h1>\n<p>"
 #define DAV_RESPONSE_BODY_4     "</p>\n"
@@ -2757,4 +2757,3 @@ DAV_DECLARE(const dav_resource_type_provider *) dav_get_resource_type_providers(
 
 #endif /* _MOD_DAV_H_ */
 /** @} */
-
diff --git a/modules/examples/mod_example_hooks.c b/modules/examples/mod_example_hooks.c
@@ -1010,6 +1010,7 @@ static int x_handler(request_rec *r)
     ap_rputs(DOCTYPE_HTML_4_01, r);
     ap_rputs("<HTML>\n", r);
     ap_rputs(" <HEAD>\n", r);
+    ap_rputs("  <META name=\"color-scheme\" content=\"light dark\">\n", r);
     ap_rputs("  <TITLE>mod_example_hooks Module Content-Handler Output\n", r);
     ap_rputs("  </TITLE>\n", r);
     ap_rputs(" </HEAD>\n", r);

diff --git a/modules/examples/mod_example_ipc.c b/modules/examples/mod_example_ipc.c
@@ -63,7 +63,7 @@
 #include <unistd.h>
 #endif
 
-#define HTML_HEADER "<html>\n<head>\n<title>Mod_example_IPC Status Page " \
+#define HTML_HEADER "<html>\n<head>\n<meta name=\"color-scheme\" content=\"light dark\" />\n<title>Mod_example_IPC Status Page " \
                     "</title>\n</head>\n<body>\n<h1>Mod_example_IPC Status</h1>\n"
 #define HTML_FOOTER "</body>\n</html>\n"
 

diff --git a/modules/generators/mod_autoindex.c b/modules/generators/mod_autoindex.c
@@ -177,7 +177,8 @@ static void emit_preamble(request_rec *r, int xhtml, const char *title)
     if (xhtml) {
         ap_rvputs(r, DOCTYPE_XHTML_1_0T,
                   "<html xmlns=\"http://www.w3.org/1999/xhtml\">\n"
-                  " <head>\n", NULL);
+                  " <head>\n"
+                  "  <meta name=\"color-scheme\" content=\"light dark\" />\n", NULL);
 	if(d->charset != NULL) {
           ap_rvputs(r, "  <meta http-equiv=\"Content-Type\" content=\"text/html; charset=", d->charset, "\" />\n", NULL);
 	}
@@ -186,6 +187,7 @@ static void emit_preamble(request_rec *r, int xhtml, const char *title)
     } else {
         ap_rvputs(r, DOCTYPE_HTML_4_01,
                   "<html>\n <head>\n"
+                  "  <meta name=\"color-scheme\" content=\"light dark\" />\n"
                   "  <title>Index of ", title,
                   "</title>\n", NULL);
     }

diff --git a/modules/generators/mod_info.c b/modules/generators/mod_info.c
@@ -789,6 +789,7 @@ static int display_info(request_rec * r)
     ap_rputs(DOCTYPE_XHTML_1_0T
              "<html xmlns=\"http://www.w3.org/1999/xhtml\">\n"
              "<head>\n"
+             "  <meta name=\"color-scheme\" content=\"light dark\" />\n"
              "  <title>Server Information</title>\n" "</head>\n", r);
     ap_rputs("<body><h1 style=\"text-align: center\">"
              "Apache Server Information</h1>\n", r);

diff --git a/modules/generators/mod_status.c b/modules/generators/mod_status.c
@@ -421,6 +421,7 @@ static int status_handler(request_rec *r)
     if (!short_report) {
         ap_rputs(DOCTYPE_HTML_4_01
                  "<html><head>\n"
+                 "<meta name=\"color-scheme\" content=\"light dark\" />\n"
                  "<title>Apache Status</title>\n"
                  "</head><body>\n"
                  "<h1>Apache Server Status for ", r);

diff --git a/modules/http/http_protocol.c b/modules/http/http_protocol.c
@@ -1358,7 +1358,7 @@ AP_DECLARE(void) ap_send_error_response(request_rec *r, int recursive_error)
 
         ap_rvputs_proto_in_ascii(r,
                   DOCTYPE_HTML_4_01
-                  "<html><head>\n<title>", title,
+                  "<html><head>\n<meta name=\"color-scheme\" content=\"light dark\" />\n<title>", title,
                   "</title>\n</head><body>\n<h1>", h1, "</h1>\n",
                   NULL);
 

diff --git a/modules/ldap/util_ldap.c b/modules/ldap/util_ldap.c
@@ -206,8 +206,8 @@ static int util_ldap_handler(request_rec *r)
         return OK;
 
     ap_rputs(DOCTYPE_HTML_4_01
-             "<html><head><title>LDAP Cache Information</title></head>\n", r);
-    ap_rputs("<body bgcolor='#ffffff'><h1 align=center>LDAP Cache Information"
+             "<html><head><meta name=\"color-scheme\" content=\"light dark\" /><title>LDAP Cache Information</title></head>\n", r);
+    ap_rputs("<body><h1 align=center>LDAP Cache Information"
              "</h1>\n", r);
 
     util_ald_cache_display(r, st);

diff --git a/modules/mappers/mod_imagemap.c b/modules/mappers/mod_imagemap.c
@@ -477,7 +477,7 @@ static void menu_header(request_rec *r, char *menu)
 {
     ap_set_content_type_ex(r, "text/html; charset=ISO-8859-1", 1);
 
-    ap_rvputs(r, DOCTYPE_HTML_4_01, "<html><head>\n<title>Menu for ",
+    ap_rvputs(r, DOCTYPE_HTML_4_01, "<html><head>\n<meta name=\"color-scheme\" content=\"light dark\" />\n<title>Menu for ",
               ap_escape_html(r->pool, r->uri),
               "</title>\n</head><body>\n", NULL);
 

diff --git a/modules/proxy/mod_proxy_balancer.c b/modules/proxy/mod_proxy_balancer.c
@@ -1597,29 +1597,38 @@ static void balancer_display_page(request_rec *r, proxy_server_conf *conf,
         ap_rputs(DOCTYPE_HTML_4_01
                  "<html><head><title>Balancer Manager</title>\n", r);
         ap_rputs("<style type='text/css'>\n"
+                 ":root {\n"
+                 " --color-gray: lightgray;\n"
+                 "}\n"
+                 "@media (prefers-color-scheme: dark) {\n"
+                 " :root {\n"
+                 "  --color-gray: darkgray;\n"
+                 " }\n"
+                 "}\n"
+                 "html {\n"
+                 " color-scheme: light dark;\n"
+                 "}\n"
                  "table {\n"
                  " border-width: 1px;\n"
                  " border-spacing: 3px;\n"
                  " border-style: solid;\n"
                  " border-color: gray;\n"
                  " border-collapse: collapse;\n"
-                 " background-color: white;\n"
                  " text-align: center;\n"
                  "}\n"
                  "th {\n"
                  " border-width: 1px;\n"
                  " padding: 2px;\n"
                  " border-style: dotted;\n"
                  " border-color: gray;\n"
-                 " background-color: lightgray;\n"
+                 " background-color: var(--color-gray);\n"
                  " text-align: center;\n"
                  "}\n"
                  "td {\n"
                  " border-width: 1px;\n"
                  " padding: 2px;\n"
                  " border-style: dotted;\n"
                  " border-color: gray;\n"
-                 " background-color: white;\n"
                  " text-align: center;\n"
                  "}\n"
                  "</style>\n</head>\n", r);

diff --git a/modules/proxy/mod_proxy_ftp.c b/modules/proxy/mod_proxy_ftp.c
@@ -533,7 +533,7 @@ static apr_status_t proxy_send_dir_filter(ap_filter_t *f,
         /* print "ftp://host/" */
         escpath = ap_escape_html(p, path);
         str = apr_psprintf(p, DOCTYPE_HTML_4_01
-                "<html>\n <head>\n  <title>%s%s%s</title>\n"
+                "<html>\n <head>\n  <meta name=\"color-scheme\" content=\"light dark\" />\n  <title>%s%s%s</title>\n"
                 "<base href=\"%s%s%s\">\n"
                 " </head>\n"
                 " <body>\n  <h2>Directory of "

diff --git a/modules/ssl/ssl_scache.c b/modules/ssl/ssl_scache.c
@@ -207,7 +207,7 @@ static int ssl_ext_status_hook(request_rec *r, int flags)
         ap_rputs("<tr><td bgcolor=\"#000000\">\n", r);
         ap_rputs("<b><font color=\"#ffffff\" face=\"Arial,Helvetica\">SSL/TLS Session Cache Status:</font></b>\r", r);
         ap_rputs("</td></tr>\n", r);
-        ap_rputs("<tr><td bgcolor=\"#ffffff\">\n", r);
+        ap_rputs("<tr><td>\n", r);
     }
     else {
         ap_rputs("TLSSessionCacheStatus\n", r);
@@ -236,4 +236,3 @@ void ssl_scache_status_register(apr_pool_t *p)
     APR_OPTIONAL_HOOK(ap, status_hook, ssl_ext_status_hook, NULL, NULL,
                       APR_HOOK_MIDDLE);
 }
-