diff --git a/src/browser/base/content/zen-panels/theme-picker.inc b/src/browser/base/content/zen-panels/theme-picker.inc
index ff059d959..524126c55 100644
--- a/src/browser/base/content/zen-panels/theme-picker.inc
+++ b/src/browser/base/content/zen-panels/theme-picker.inc
@@ -131,10 +131,10 @@
             </box>
             <html:input type="range" value="0.4" step="0.001" id="PanelUI-zen-gradient-generator-opacity"
 #ifdef XP_MACOSX
-              max="0.9"
+              max="0.8"
               min="0.30"
 #else
-              max="0.9"
+              max="0.8"
               min="0.25"
 #endif
               />
diff --git a/src/zen/common/styles/zen-single-components.css b/src/zen/common/styles/zen-single-components.css
index d9687232d..ebb89c8e7 100644
--- a/src/zen/common/styles/zen-single-components.css
+++ b/src/zen/common/styles/zen-single-components.css
@@ -185,7 +185,7 @@
 .toolbarbutton-1:not(#tabs-newtab-button),
 .urlbar-page-action,
 .identity-box-button {
-  --tab-border-radius: 6px;
+  --tab-border-radius: 8px;
   --toolbarbutton-border-radius: var(--tab-border-radius);
   --toolbarbutton-inner-padding: 6px;
   --toolbarbutton-outer-padding: 1px;
diff --git a/src/zen/common/styles/zen-theme.css b/src/zen/common/styles/zen-theme.css
index 815dd2a34..d9c22135f 100644
--- a/src/zen/common/styles/zen-theme.css
+++ b/src/zen/common/styles/zen-theme.css
@@ -213,6 +213,8 @@
   --toolbarbutton-border-radius: 6px;
   --urlbar-margin-inline: 1px !important;
 
+  --zen-squircle-value: 1.3;
+
   --tab-icon-overlay-stroke: light-dark(white, black) !important;
   --tab-close-button-padding: 4px !important;
 
@@ -343,3 +345,7 @@
 }
 
 %include zen-buttons.css
+
+*:not(.no-squircles) {
+  corner-shape: superellipse(var(--zen-squircle-value));
+}
diff --git a/src/zen/glance/zen-glance.css b/src/zen/glance/zen-glance.css
index 0c03d05a6..ba3029ab9 100644
--- a/src/zen/glance/zen-glance.css
+++ b/src/zen/glance/zen-glance.css
@@ -41,11 +41,11 @@
 
     &:hover {
       background: light-dark(rgb(41, 41, 41), rgb(204, 204, 204));
-      scale: 1.05;
+      scale: 1.02;
     }
 
     &:hover:active {
-      scale: 0.95;
+      scale: 0.98;
     }
 
     & label {
diff --git a/src/zen/glance/zen-glance.inc.xhtml b/src/zen/glance/zen-glance.inc.xhtml
index 96f6e3873..de53f06cf 100644
--- a/src/zen/glance/zen-glance.inc.xhtml
+++ b/src/zen/glance/zen-glance.inc.xhtml
@@ -4,8 +4,8 @@
 
 <html:template id="zen-glance-sidebar-template">
   <vbox class="zen-glance-sidebar-container">
-    <toolbarbutton class="zen-glance-sidebar-close toolbarbutton-1" command="cmd_zenGlanceClose" data-l10n-id="zen-general-confirm" />
-    <toolbarbutton class="zen-glance-sidebar-open toolbarbutton-1" command="cmd_zenGlanceExpand" />
-    <toolbarbutton class="zen-glance-sidebar-split toolbarbutton-1" command="cmd_zenGlanceSplit" />
+    <toolbarbutton class="no-squircles zen-glance-sidebar-close toolbarbutton-1" command="cmd_zenGlanceClose" data-l10n-id="zen-general-confirm" />
+    <toolbarbutton class="no-squircles zen-glance-sidebar-open toolbarbutton-1" command="cmd_zenGlanceExpand" />
+    <toolbarbutton class="no-squircles zen-glance-sidebar-split toolbarbutton-1" command="cmd_zenGlanceSplit" />
   </vbox>
 </html:template>
diff --git a/src/zen/spaces/ZenGradientGenerator.mjs b/src/zen/spaces/ZenGradientGenerator.mjs
index b5b7bd289..5ddf4319c 100644
--- a/src/zen/spaces/ZenGradientGenerator.mjs
+++ b/src/zen/spaces/ZenGradientGenerator.mjs
@@ -1496,7 +1496,7 @@ export class nsZenThemePicker extends nsZenMultiWindowFeature {
 
   getToolbarColor(isDarkMode = false, accentColor = null) {
     const opacity = 0.8;
-    let baseColor = isDarkMode ? [255, 255, 255, opacity] : [0, 0, 0, opacity]; // Default toolbar
+    let baseColor = isDarkMode ? [225, 225, 225, opacity] : [30, 30, 30, opacity]; // Default toolbar
     if (accentColor) {
       return this.blendColors(baseColor.slice(0, 3), accentColor, 75).concat(1);
     }
diff --git a/src/zen/spaces/zen-workspaces.css b/src/zen/spaces/zen-workspaces.css
index 0007b69da..996ba01ef 100644
--- a/src/zen/spaces/zen-workspaces.css
+++ b/src/zen/spaces/zen-workspaces.css
@@ -32,6 +32,7 @@
   & toolbarbutton {
     margin: 0;
     max-width: 28px;
+    border-radius: var(--toolbarbutton-border-radius);
     height: 28px;
     display: flex;
     justify-content: center;
diff --git a/src/zen/tabs/zen-tabs/vertical-tabs.css b/src/zen/tabs/zen-tabs/vertical-tabs.css
index c24e2cc71..077688268 100644
--- a/src/zen/tabs/zen-tabs/vertical-tabs.css
+++ b/src/zen/tabs/zen-tabs/vertical-tabs.css
@@ -235,7 +235,7 @@
   }
 
   @media (-moz-platform: macos) {
-    --border-radius-medium: 12px;
+    --border-radius-medium: 14px;
     --tab-border-radius: 8px;
   }
 
@@ -1241,6 +1241,8 @@
         background: var(--zen-essential-tab-selected-bg);
         margin: var(--zen-essential-bg-margin);
         border-radius: calc(var(--border-radius-medium) - var(--zen-essential-bg-margin));
+        /* stylelint-disable-next-line property-no-unknown */
+        corner-shape: var(--zen-squircle-value);
         position: absolute;
         inset: 0;
         z-index: 0;