diff --git a/css/leptonChrome.css b/css/leptonChrome.css
index 13efdb5..dd84334 100644
--- a/css/leptonChrome.css
+++ b/css/leptonChrome.css
@@ -185,9 +185,14 @@
     (-moz-platform: windows-win7),
     (-moz-os-version: windows-win8),
     (-moz-platform: windows-win8) {
-    /* Header Color */
-    :root:not([lwtheme-image]):-moz-lwtheme {
-      background-color: var(--lwt-accent-color) !important;
+    @supports not -moz-bool-pref("userChrome.theme.transparent.frame") {
+      /* Header Color */
+      :root:not([lwtheme-image]):-moz-lwtheme {
+        background-color: var(--lwt-accent-color) !important;
+      }
+      :root:not([lwtheme-image]):-moz-lwtheme:-moz-window-inactive {
+        background-color: var(--lwt-accent-color-inactive, var(--lwt-accent-color)) !important;
+      }
     }
   }
   @media (-moz-os-version: windows-win7), (-moz-platform: windows-win7) {
@@ -2175,7 +2180,11 @@
 }
 /*= Transparent ==============================================================*/
 @supports -moz-bool-pref("userChrome.theme.transparent.frame") {
-  @media (-moz-os-version: windows-win10), (-moz-platform: windows-win10), (-moz-gtk-csd-available) {
+  @media (-moz-os-version: windows-win10),
+    (-moz-platform: windows-win10),
+    (-moz-os-version: windows-win7),
+    (-moz-platform: windows-win7),
+    (-moz-gtk-csd-available) {
     #main-window,
     #navigator-toolbox-background {
       background-color: transparent !important;
@@ -2199,27 +2208,7 @@
       -moz-default-appearance: -moz-win-exclude-glass !important;
     }
   }
-  @media (-moz-os-version: windows-win10), (-moz-platform: windows-win10) {
-    :root,
-    #navigator-toolbox {
-      --lwt-accent-color: transparent !important;
-      --lwt-text-color: WindowText !important;
-    }
-    #titlebar .toolbarbutton-1 {
-      --toolbarbutton-icon-fill: var(--lwt-text-color) !important;
-    }
-    :root:not([sizemode="fullscreen"]) .titlebar-buttonbox-container .titlebar-button:not(.titlebar-close:hover) {
-      list-style-image: none !important;
-    }
-    :root:not([sizemode="fullscreen"])
-      #toolbar-menubar[autohide="true"][inactive="true"]
-      + #TabsToolbar
-      .titlebar-button:is(.titlebar-close:hover)
-      .toolbarbutton-icon {
-      transform: translateY(-7px) !important;
-    }
-  }
-  @media (-moz-gtk-csd-available) {
+  @media (-moz-os-version: windows-win7), (-moz-platform: windows-win7), (-moz-gtk-csd-available) {
     :root:not(:-moz-lwtheme) {
       --lwt-accent-color: Window !important;
       --lwt-text-color: WindowText !important;
@@ -2242,7 +2231,7 @@
     }
     #main-menubar:not(:-moz-window-inactive),
     .titlebar-buttonbox-container:not(:-moz-window-inactive) {
-      background-color: var(--uc-frame-element-background);
+      background-color: var(--uc-frame-element-background) !important;
       border-radius: 4px;
     }
     #TabsToolbar {
@@ -2264,6 +2253,46 @@
       background-color: var(--uc-frame-element-background);
     }
   }
+  @media (-moz-os-version: windows-win10), (-moz-platform: windows-win10) {
+    :root,
+    #navigator-toolbox {
+      --lwt-accent-color: transparent !important;
+      --lwt-text-color: WindowText !important;
+    }
+    #titlebar .toolbarbutton-1 {
+      --toolbarbutton-icon-fill: var(--lwt-text-color) !important;
+    }
+    :root:not([sizemode="fullscreen"]) .titlebar-buttonbox-container .titlebar-button:not(.titlebar-close:hover) {
+      list-style-image: none !important;
+    }
+    :root:not([sizemode="fullscreen"])
+      #toolbar-menubar[autohide="true"][inactive="true"]
+      + #TabsToolbar
+      .titlebar-button:is(.titlebar-close:hover)
+      .toolbarbutton-icon {
+      transform: translateY(-7px) !important;
+    }
+  }
+  @media (-moz-os-version: windows-win7), (-moz-platform: windows-win7) {
+    :root:not([lwtheme-image]):-moz-lwtheme {
+      background-color: transparent !important;
+      background-image: none !important;
+    }
+    #main-menubar:not(:-moz-window-inactive) {
+      color: var(--lwt-text-color) !important;
+    }
+    @media (-moz-toolbar-prefers-color-scheme: dark), (prefers-color-scheme: dark) {
+      #toolbar-menubar:not(:-moz-window-inactive) {
+        text-shadow: unset !important;
+      }
+    }
+    @media (-moz-windows-default-theme) {
+      #TabsToolbar {
+        color: inherit !important;
+        background-image: unset !important;
+      }
+    }
+  }
   @supports -moz-bool-pref("layout.css.osx-font-smoothing.enabled") {
     :root:not(:-moz-window-inactive) #navigator-toolbox {
       background-color: transparent !important;
diff --git a/src/compatibility/_os.scss b/src/compatibility/_os.scss
index 1f3a14b..a0ab63c 100644
--- a/src/compatibility/_os.scss
+++ b/src/compatibility/_os.scss
@@ -20,9 +20,15 @@
 
 /*= Windows 7, 8 - Tab Bar Background *****************************************/
 @include OS($win7, $win8) {
-  /* Header Color */
-  :root:not([lwtheme-image]):-moz-lwtheme {
-    background-color: var(--lwt-accent-color) !important;
+  @include NotOption("userChrome.theme.transparent.frame") {
+    /* Header Color */
+    :root:not([lwtheme-image]):-moz-lwtheme {
+      background-color: var(--lwt-accent-color) !important;
+
+      &:-moz-window-inactive {
+        background-color: var(--lwt-accent-color-inactive, var(--lwt-accent-color)) !important;
+      }
+    }
   }
 }
 
diff --git a/src/theme/_transparent.scss b/src/theme/_transparent.scss
index dc8ab1c..e37aeb7 100644
--- a/src/theme/_transparent.scss
+++ b/src/theme/_transparent.scss
@@ -1,11 +1,14 @@
-@include OS($win10, $linux) {
+@include OS($win10, $win7, $linux) {
   @import "transparent/general";
 }
+@include OS($win7, $linux) {
+  @import "transparent/general_element_background";
+}
 @include OS($win10) {
   @import "transparent/win11";
 }
-@include OS($linux) {
-  @import "transparent/linux";
+@include OS($win7) {
+  @import "transparent/win7";
 }
 @include OS($mac) {
   @import "transparent/mac";
diff --git a/src/theme/transparent/_general.scss b/src/theme/transparent/_general.scss
index 5f8db87..b838e21 100644
--- a/src/theme/transparent/_general.scss
+++ b/src/theme/transparent/_general.scss
@@ -9,6 +9,7 @@
   background-color: transparent !important;
   background-image: none !important;
 }
+
 #nav-bar,
 #PersonalToolbar {
   background-image: linear-gradient(
diff --git a/src/theme/transparent/_linux.scss b/src/theme/transparent/_general_element_background.scss
similarity index 96%
rename from src/theme/transparent/_linux.scss
rename to src/theme/transparent/_general_element_background.scss
index 90eac2b..7a85fa9 100644
--- a/src/theme/transparent/_linux.scss
+++ b/src/theme/transparent/_general_element_background.scss
@@ -28,7 +28,7 @@
 
 #main-menubar:not(:-moz-window-inactive),
 .titlebar-buttonbox-container:not(:-moz-window-inactive) {
-  background-color: var(--uc-frame-element-background);
+  background-color: var(--uc-frame-element-background) !important;
   border-radius: 4px;
 }
 
diff --git a/src/theme/transparent/_win7.scss b/src/theme/transparent/_win7.scss
new file mode 100644
index 0000000..0fe1f03
--- /dev/null
+++ b/src/theme/transparent/_win7.scss
@@ -0,0 +1,21 @@
+:root:not([lwtheme-image]):-moz-lwtheme {
+  background-color: transparent !important;
+  background-image: none !important;
+}
+
+#main-menubar:not(:-moz-window-inactive) {
+  color: var(--lwt-text-color) !important;
+}
+
+@include Dark {
+  #toolbar-menubar:not(:-moz-window-inactive) {
+    text-shadow: unset !important;
+  }
+}
+
+@media (-moz-windows-default-theme) {
+  #TabsToolbar {
+    color: inherit !important;
+    background-image: unset !important;
+  }
+}