diff --git a/README.md b/README.md
index 7e2c6df..51de88d 100644
--- a/README.md
+++ b/README.md
@@ -176,8 +176,8 @@ Usage:  `./tweaks.sh [OPTIONS...]`
 <details> <summary> Options </summary>
 
 ```bash
--f, --firefox [default|monterey]
-Install 'WhiteSur|Monterey' theme for Firefox and connect it to the current Firefox profiles. Default is WhiteSur
+-f, --firefox [default|monterey|alt]
+Install 'WhiteSur|Monterey|Monterey-Alt' theme for Firefox and connect it to the current Firefox profiles. Default is WhiteSur
 
 -e, --edit-firefox
 Edit 'WhiteSur' theme for Firefox settings and also connect the theme to the current Firefox profiles.
diff --git a/src/other/firefox/Monterey/parts/tabsbar-alt.css b/src/other/firefox/Monterey/parts/tabsbar-alt.css
index 8c5ec98..db3d795 100644
--- a/src/other/firefox/Monterey/parts/tabsbar-alt.css
+++ b/src/other/firefox/Monterey/parts/tabsbar-alt.css
@@ -87,15 +87,10 @@ tab > stack {
 	flex-direction: row;
 	justify-content: center;
 	align-items: center;
-	margin-top: -1px;
 	min-width: 100% !important;
 	padding: 0 10px !important;
 }
 
-.tabbrowser-tab[class*="identity-color-"][pinned] {
-	display: flex;
-}
-
 .tab-background {
 	transition: all 200ms;
 }
@@ -177,17 +172,6 @@ tab > stack {
 	.tabbrowser-tab {
 		padding-inline: 0px !important;
 	}
-
-	.tabbrowser-tab[selected="true"]>.tab-stack>.tab-background {
-		margin-left: 0px !important;
-		margin-right: 0px !important;
-	}
-
-	/* centre text when audio is playing */
-	.tabbrowser-tab:is([soundplaying]) .tab-label-container {
-		margin-left: 0 !important;
-		margin-right: auto !important
-	}
 }
 
 .close-icon {
@@ -268,10 +252,16 @@ tab > stack {
 }
 
 /* Remove container bottom line indicator */
+
+/* Remove alt colours references for multi tabs*/
 .tabbrowser-tab[usercontextid] > .tab-stack > .tab-background > .tab-bottom-line {
 	display: none;
 }
 
+.tabbrowser-tab[class*="identity-color-"][pinned] {
+	display: flex;
+}
+
 #TabsToolbar #alltabs-button {
 	padding: 0 0 !important;
 	visibility: collapse !important;
diff --git a/src/other/firefox/WhiteSur/parts/tabsbar.css b/src/other/firefox/WhiteSur/parts/tabsbar.css
index 1994be9..ad2b671 100644
--- a/src/other/firefox/WhiteSur/parts/tabsbar.css
+++ b/src/other/firefox/WhiteSur/parts/tabsbar.css
@@ -322,11 +322,6 @@ tab[selected]:-moz-window-inactive {
 	display: none !important;
 }
 
-/* Remove container bottom line indicator */
-.tabbrowser-tab[usercontextid] > .tab-stack > .tab-background > .tab-bottom-line {
-	display: none;
-}
-
 /* Create new container tab indicator */
 .tabbrowser-tab[class*="identity-color-"] .tab-content::before {
 	content: "";