diff --git a/config.conf b/config.conf
index f4c1ab0..30f9fec 100644
--- a/config.conf
+++ b/config.conf
@@ -85,6 +85,7 @@ maxmizescreencolor=0x89aa61ff
 urgentcolor=0xad401fff
 scratchpadcolor=0x516c93ff
 globalcolor=0xb153a7ff
+overlaycolor=0x14a57cff
 
 # layout circle limit
 # if not set, it will circle all layout
@@ -196,6 +197,7 @@ bind=ALT,a,togglemaxmizescreen,
 bind=ALT,f,togglefullscreen,
 bind=ALT+SHIFT,f,togglefakefullscreen,
 bind=SUPER,i,minized,
+bind=SUPER,o,toggleoverlay,
 bind=SUPER+SHIFT,I,restore_minized
 bind=ALT,z,toggle_scratchpad
 
diff --git a/src/config/parse_config.h b/src/config/parse_config.h
index 501979b..aa2c1e7 100644
--- a/src/config/parse_config.h
+++ b/src/config/parse_config.h
@@ -162,6 +162,7 @@ typedef struct {
   float urgentcolor[4];
   float scratchpadcolor[4];
   float globalcolor[4];
+  float overlaycolor[4];
 
   char autostart[3][256];
 
@@ -460,6 +461,8 @@ FuncType parse_func_name(char *func_name, Arg *arg, char *arg_value) {
     func = togglefullscreen;
   } else if (strcmp(func_name, "togglefakefullscreen") == 0) {
     func = togglefakefullscreen;
+  } else if (strcmp(func_name, "toggleoverlay") == 0) {
+    func = toggleoverlay;
   } else if (strcmp(func_name, "minized") == 0) {
     func = minized;
   } else if (strcmp(func_name, "restore_minized") == 0) {
@@ -834,6 +837,13 @@ void parse_config_line(Config *config, const char *line) {
     } else {
       convert_hex_to_rgba(config->globalcolor, color);
     }
+  } else if (strcmp(key, "overlaycolor") == 0) {
+    long int color = parse_color(value);
+    if (color == -1) {
+      fprintf(stderr, "Error: Invalid overlaycolor format: %s\n", value);
+    } else {
+      convert_hex_to_rgba(config->overlaycolor, color);
+    }
   } else if (strcmp(key, "autostart") == 0) {
     if (sscanf(value, "%[^,],%[^,],%[^,]", config->autostart[0],
                config->autostart[1], config->autostart[2]) != 3) {
@@ -1272,6 +1282,7 @@ void override_config(void) {
   memcpy(urgentcolor, config.urgentcolor, sizeof(urgentcolor));
   memcpy(scratchpadcolor, config.scratchpadcolor, sizeof(scratchpadcolor));
   memcpy(globalcolor, config.globalcolor, sizeof(globalcolor));
+  memcpy(overlaycolor, config.overlaycolor, sizeof(overlaycolor));
 }
 
 void set_value_default() {
@@ -1367,6 +1378,7 @@ void set_value_default() {
   memcpy(config.urgentcolor, urgentcolor, sizeof(urgentcolor));
   memcpy(config.scratchpadcolor, scratchpadcolor, sizeof(scratchpadcolor));
   memcpy(config.globalcolor, globalcolor, sizeof(globalcolor));
+  memcpy(config.overlaycolor, overlaycolor, sizeof(overlaycolor));
 }
 
 void set_default_key_bindings(Config *config) {
diff --git a/src/config/preset_config.h b/src/config/preset_config.h
index 20f0a29..5e37709 100644
--- a/src/config/preset_config.h
+++ b/src/config/preset_config.h
@@ -67,6 +67,7 @@ float maxmizescreencolor[] = COLOR(0x89aa61ff);
 float urgentcolor[] = COLOR(0xad401fff);
 float scratchpadcolor[] = COLOR(0x516c93ff);
 float globalcolor[] = COLOR(0xb153a7ff);
+float overlaycolor[] = COLOR(0x14a57cff);
 // char *cursor_theme = "Bibata-Modern-Ice";
 
 int overviewgappi = 5;  /* overview时 窗口与边缘 缝隙大小 */
diff --git a/src/dispatch/dispatch.h b/src/dispatch/dispatch.h
index 2f8e8a5..48469f5 100644
--- a/src/dispatch/dispatch.h
+++ b/src/dispatch/dispatch.h
@@ -50,3 +50,4 @@ void incovgaps(const Arg *arg);
 void incigaps(const Arg *arg);
 void defaultgaps(const Arg *arg);
 void togglefakefullscreen(const Arg *arg);
+void toggleoverlay(const Arg *arg);
diff --git a/src/maomao.c b/src/maomao.c
index 67bc01b..8f4e0f8 100644
--- a/src/maomao.c
+++ b/src/maomao.c
@@ -231,7 +231,7 @@ struct Client {
   bool dirty;
   uint32_t configure_serial;
   struct wlr_foreign_toplevel_handle_v1 *foreign_toplevel;
-  int isfloating, isurgent, isfullscreen, isfakefullscreen, need_float_size_reduce, isminied;
+  int isfloating, isurgent, isfullscreen, isfakefullscreen, need_float_size_reduce, isminied, isoverlay;
   int ismaxmizescreen;
   int overview_backup_bw;
   int fullscreen_backup_x, fullscreen_backup_y, fullscreen_backup_w,
@@ -1244,6 +1244,24 @@ void clear_fullscreen_flag(Client *c) {
   }
 }
 
+void toggleoverlay(const Arg *arg) {
+  if (!selmon->sel || !selmon->sel->mon || selmon->sel->isfullscreen) {
+    return;
+  }
+
+  selmon->sel->isoverlay ^= 1;
+
+  if (selmon->sel->isoverlay) {
+    wlr_scene_node_reparent(&selmon->sel->scene->node,
+      layers[LyrFS]);
+    wlr_scene_node_raise_to_top(&selmon->sel->scene->node);
+  } else {
+    wlr_scene_node_reparent(&selmon->sel->scene->node,
+      layers[selmon->sel->isfloating ? LyrFloat : LyrTile]);   
+  }
+  setborder_color(selmon->sel);
+}
+
 void minized(const Arg *arg) {
   if (selmon->sel && !selmon->sel->isminied) {
     set_minized(selmon->sel);
@@ -4094,6 +4112,7 @@ mapnotify(struct wl_listener *listener, void *data) {
   c->iskilling = 0;
   c->isglobal = 0;
   c->isminied = 0;
+  c->isoverlay = 0;
   c->is_in_scratchpad = 0;
   c->is_scratchpad_show = 0;
   c->need_float_size_reduce = 0;
@@ -4695,7 +4714,9 @@ void setborder_color(Client *c) {
     client_set_border_color(c, scratchpadcolor);
   } else if (c->isglobal && selmon && c == selmon->sel) {
     client_set_border_color(c, globalcolor);
-  } else if (c->ismaxmizescreen && selmon && c == selmon->sel) {
+  } else if (c->isoverlay && selmon && c == selmon->sel) {
+    client_set_border_color(c, overlaycolor);
+  }  else if (c->ismaxmizescreen && selmon && c == selmon->sel) {
     client_set_border_color(c, maxmizescreencolor);
   } else if (selmon && c == selmon->sel) {
     client_set_border_color(c, focuscolor);