Add theme: Zen Mac Buttons

themes/2612fbdb-1be8-412e-b310-ff53cec79301/chrome.css

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+
+.titlebar-button {
+  appearance: none !important;
+  width: 16px !important;
+  height: 16px !important;
+  border-radius: 50% !important;
+  padding: 0 !important;
+  margin: auto 4px !important;
+  border: 1px solid rgba(0, 0, 0, 0.15) !important;
+  display: flex !important;
+  align-items: center !important;
+  justify-content: center !important;
+}
+
+.titlebar-close {
+  background-color: #fd5754 !important;
+}
+
+.titlebar-min {
+  background-color: #febb40 !important;
+}
+
+.titlebar-restore,
+.titlebar-max {
+  background-color: #27c93f !important;
+}
+
+.titlebar-button .toolbarbutton-icon {
+  opacity: 0 !important;
+  width: 16px !important;
+  height: 16px !important;
+}
+
+.titlebar-button:hover .toolbarbutton-icon {
+  opacity: 1 !important;
+}
+
+.titlebar-close .toolbarbutton-icon {
+  list-style-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 85.4 85.4"><g fill="%23460804"><path d="m22.5 57.8 35.3-35.3c1.4-1.4 3.6-1.4 5 0l.1.1c1.4 1.4 1.4 3.6 0 5l-35.3 35.3c-1.4 1.4-3.6 1.4-5 0l-.1-.1c-1.3-1.4-1.3-3.6 0-5z"/><path d="m27.6 22.5 35.3 35.3c1.4 1.4 1.4 3.6 0 5l-.1.1c-1.4 1.4-3.6 1.4-5 0l-35.3-35.3c-1.4-1.4-1.4-3.6 0-5l.1-.1c1.4-1.3 3.6-1.3 5 0z"/></g></svg>') !important;
+  color: #82050a !important;
+}
+
+.titlebar-min .toolbarbutton-icon {
+  list-style-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 85.4 85.4"><path fill="%2390591d" d="m17.8 39.1h49.9c1.9 0 3.5 1.6 3.5 3.5v.1c0 1.9-1.6 3.5-3.5 3.5h-49.9c-1.9 0-3.5-1.6-3.5-3.5v-.1c0-1.9 1.5-3.5 3.5-3.5z"/></svg>') !important;
+  color: #995711 !important;
+}
+
+.titlebar-restore .toolbarbutton-icon,
+.titlebar-max .toolbarbutton-icon {
+  list-style-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 85.4 85.4"><path fill="%232a6218" d="m31.2 20.8h26.7c3.6 0 6.5 2.9 6.5 6.5v26.7zm23.2 43.7h-26.8c-3.6 0-6.5-2.9-6.5-6.5v-26.8z"/></svg>') !important;
+}
+
+:root:not([sizemode="maximized"]) .titlebar-restore {
+  display: none !important;
+}
+
+:root[sizemode="maximized"] .titlebar-max {
+  display: none !important;
+}

themes/2612fbdb-1be8-412e-b310-ff53cec79301/readme.md

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+
+# Zen Mac Buttons
+
+Mac-style titlebar buttons (close, minimize, maximize) for Zen Browser.
+
+## Preview
+![Preview](https://raw.githubusercontent.com/MiguelRequenaR/zen-mac-buttons/main/image.png)
+
+## Installation
+
+### Via Zen Mods (recommended)
+Search for "Zen Mac Buttons" in `about:addons` inside Zen Browser.
+
+### Manual
+1. Go to `about:config` and enable `toolkit.legacyUserProfileCustomizations.stylesheets`
+2. Find your profile folder at `about:profiles`
+3. Create a `chrome/` folder inside it
+4. Add a `userChrome.css` with: `@import "theme.css";`
+5. Copy `theme.css` into the `chrome/` folder
+6. Restart Zen Browser
+
+## Compatibility
+Tested on Zen Browser 1.19.13b — Ubuntu 26.04 LTS.
+
+## Important Note: Button Positioning
+By default, Linux places window controls on the right. To enjoy the macOS experience, you must move them to the left:
+
+* **Ubuntu/GNOME:** Install the "GNOME Tweaks" application. Go to the "Windows" section and change the "Title bar button position" option to "Left".

themes/2612fbdb-1be8-412e-b310-ff53cec79301/theme.json

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+{
+    "id": "2612fbdb-1be8-412e-b310-ff53cec79301",
+    "name": "Zen Mac Buttons",
+    "description": "Mac-style titlebar buttons for Zen Browser.",
+    "homepage": "https://github.com/MiguelRequenaR/zen-mac-buttons",
+    "style": "https://raw.githubusercontent.com/zen-browser/theme-store/main/themes/2612fbdb-1be8-412e-b310-ff53cec79301/chrome.css",
+    "readme": "https://raw.githubusercontent.com/zen-browser/theme-store/main/themes/2612fbdb-1be8-412e-b310-ff53cec79301/readme.md",
+    "image": "https://raw.githubusercontent.com/zen-browser/theme-store/main/themes/2612fbdb-1be8-412e-b310-ff53cec79301/image.png",
+    "author": "MiguelRequenaR",
+    "version": "1.0.0",
+    "tags": [],
+    "createdAt": "2026-05-17",
+    "updatedAt": "2026-05-17"
+}