Fix dropdown menus in firefox to not have rounder corners, shadows or blur

Author: EnriqueVidal

.config/picom/picom.conf

@@ -68,17 +68,17 @@ shadow-opacity = 0.5;
 # This list includes all the affected apps I found in my testing. The "! name~=''" part excludes shadows on any "Unknown" windows, this prevents a visual glitch with the XFWM alt tab switcher.
 shadow-exclude = [
     "! name~=''",
+    "argb",
     "name = 'Notification'",
     "name = 'Plank'",
     "name = 'Docky'",
     "name = 'Kupfer'",
     "name = 'xfce4-notifyd'",
-    "name *= 'VLC'",
     "name *= 'compton'",
     "name *= 'picom'",
     "name *= 'Chromium'",
     "name *= 'Chrome'",
-    "class_g = 'Firefox' && argb",
+    "class_g = 'Firefox'",
     "class_g = 'Conky'",
     "class_g = 'Kupfer'",
     "class_g = 'Synapse'",
@@ -87,9 +87,16 @@ shadow-exclude = [
     "class_g ?= 'Xfce4-notifyd'",
     "class_g ?= 'Xfce4-power-manager'",
 ];
+
 # Avoid drawing shadow on all shaped windows (see also: --detect-rounded-corners)
 shadow-ignore-shaped = false;
 
+rounded-corners-exclude = [
+  "window_type = 'dropdown_menu'",
+  "window_type = 'popup_menu'",
+  "window_type = 'utility'",
+];
+
 #################################
 #
 # Opacity
@@ -102,8 +109,8 @@ frame-opacity = 1;
 inactive-opacity-override = false;
 
 # Dim inactive windows. (0.0 - 1.0)
-# inactive-dim = 0.1;
-inactive-dim = 0;
+inactive-dim = 0.1;
+
 # Do not let dimness adjust based on window opacity.
 # inactive-dim-fixed = true;
 # Blur background of transparent windows. Bad performance with X Render backend. GLX backend is preferred.
@@ -112,11 +119,14 @@ inactive-dim = 0;
 # blur-background-frame = true;
 # Do not let blur radius adjust based on window opacity.
 #blur-background-fixed = false;
-#blur-background-exclude = [
-#    "window_type = 'dock'",
-#    "window_type = 'desktop'"
-#    "class_g = 'i3-frame'",
-#];
+blur-background-exclude = [
+  "class_g ='firefox'",
+  "class_g ='Thunderbird'",
+  "window_type = 'dropdown_menu'",
+  "window_type = 'popup_menu'",
+  "window_type = 'utility'",
+  "argb",
+];
 
 #blur:
 #{
@@ -143,7 +153,11 @@ fade-out-step = 0.03;
 # no-fading-openclose = true;
 
 # Specify a list of conditions of windows that should not be faded.
-fade-exclude = [ ];
+fade-exclude = [
+  "window_type = 'dropdown_menu'",
+  "window_type = 'popup_menu'",
+  "window_type = 'utility'",
+];
 
 #################################
 #