diff --git a/themes/47333d76-d9dd-4634-9877-619c730bc824/chrome.css b/themes/47333d76-d9dd-4634-9877-619c730bc824/chrome.css
new file mode 100644
index 00000000..5f3715a9
--- /dev/null
+++ b/themes/47333d76-d9dd-4634-9877-619c730bc824/chrome.css
@@ -0,0 +1,30 @@
+
+/* Outlined Tab Groups */
+/* Fixes text centering on tab groups (experimental Firefox 137+ feature, can be activated now in Zen with about:config) and gives them an outline-only look, changes to solid fill color when opened */
+.tab-group-label-container {
+  padding-left: 5px;
+}
+
+.tab-group-label {
+  outline: unset;
+  background-color: var(--tab-group-color) !important;
+  color: white !important;
+  padding-right: 4px !important;
+  padding-top: 2px !important;
+}
+
+.tab-group-label {
+  tab-group[collapsed] > .tab-group-label-container > & {
+  outline-width: 1px !important;
+  outline-color: var(--tab-group-color) !important;
+  color: var(--tab-group-color) !important;
+  background-color: unset !important;
+}
+}
+
+.tab-group-label {
+  tab-group[collapsed] > .tab-group-label-container > &:hover {
+  outline-color:  color-mix(in hsl, var(--tab-group-color),white 20%) !important;
+  color: color-mix(in hsl, var(--tab-group-color),white 20%) !important;
+}
+}
diff --git a/themes/47333d76-d9dd-4634-9877-619c730bc824/image.png b/themes/47333d76-d9dd-4634-9877-619c730bc824/image.png
new file mode 100644
index 00000000..49cfc6c4
Binary files /dev/null and b/themes/47333d76-d9dd-4634-9877-619c730bc824/image.png differ
diff --git a/themes/47333d76-d9dd-4634-9877-619c730bc824/readme.md b/themes/47333d76-d9dd-4634-9877-619c730bc824/readme.md
new file mode 100644
index 00000000..3ee4ed37
--- /dev/null
+++ b/themes/47333d76-d9dd-4634-9877-619c730bc824/readme.md
@@ -0,0 +1,3 @@
+
+# Outlined Tab Groups
+Fixes text centering on tab groups (experimental Firefox 137+ feature, can be activated now in Zen with about:config) and gives them an outline-only look, changes to solid fill color when opened
diff --git a/themes/47333d76-d9dd-4634-9877-619c730bc824/theme.json b/themes/47333d76-d9dd-4634-9877-619c730bc824/theme.json
new file mode 100644
index 00000000..5059bc08
--- /dev/null
+++ b/themes/47333d76-d9dd-4634-9877-619c730bc824/theme.json
@@ -0,0 +1,14 @@
+{
+    "id": "47333d76-d9dd-4634-9877-619c730bc824",
+    "name": "Outlined Tab Groups",
+    "description": "Fixes text centering on tab groups (experimental feature) and gives them an outline-only look",
+    "homepage": "https://github.com/Lu9-ST/zen-stuff",
+    "style": "https://raw.githubusercontent.com/zen-browser/theme-store/main/themes/47333d76-d9dd-4634-9877-619c730bc824/chrome.css",
+    "readme": "https://raw.githubusercontent.com/zen-browser/theme-store/main/themes/47333d76-d9dd-4634-9877-619c730bc824/readme.md",
+    "image": "https://raw.githubusercontent.com/zen-browser/theme-store/main/themes/47333d76-d9dd-4634-9877-619c730bc824/image.png",
+    "author": "Lu9-ST",
+    "version": "1.0.0",
+    "tags": [],
+    "createdAt": "2025-04-14",
+    "updatedAt": "2025-04-14"
+}
\ No newline at end of file