diff --git a/gtk/theme/Adwaita/_drawing.scss b/gtk/theme/Adwaita/_drawing.scss
index 4655785699..0b355e853d 100644
--- a/gtk/theme/Adwaita/_drawing.scss
+++ b/gtk/theme/Adwaita/_drawing.scss
@@ -500,9 +500,9 @@
 // $hc: top highlight color
 // $ov: a background layer for background shorthand (hence no commas!)
 //
-  $gradient: linear-gradient(to top, darken($c, 4%), $c 3px, lighten($c, 1%));
+  $gradient: linear-gradient(to top, darken($c, 2%), lighten($c, 1%));
 
-  @if $variant == 'dark' { $gradient: linear-gradient(to top, lighten($c, 4%) 3px, lighten($c, 5%)); }
+  @if $variant == 'dark' { $gradient: linear-gradient(to top, lighten($c, 4%), lighten($c, 6%)); }
 
   @if $ov != none { background: $c $ov, $gradient; }
   @else { background: $c $gradient; }
diff --git a/gtk/theme/Adwaita/gtk-contained-dark.css b/gtk/theme/Adwaita/gtk-contained-dark.css
index 8831100025..fab8a6a605 100644
--- a/gtk/theme/Adwaita/gtk-contained-dark.css
+++ b/gtk/theme/Adwaita/gtk-contained-dark.css
@@ -592,7 +592,7 @@ searchbar > revealer > box { margin: -6px; padding: 6px; }
 .inline-toolbar:backdrop, searchbar > revealer > box:backdrop, .location-bar:backdrop { border-color: #2a2a2b; background-color: #383738; box-shadow: none; transition: 200ms ease-out; }
 
 /*************** Header bars * */
-.titlebar:not(headerbar), headerbar { padding: 0 6px; min-height: 46px; border-width: 0 0 1px; border-style: solid; border-color: #111111; border-radius: 0; background: #252526 linear-gradient(to top, #302f30 3px, #323233); box-shadow: inset 0 1px rgba(238, 238, 236, 0.07); /* hide the close button separator */ }
+.titlebar:not(headerbar), headerbar { padding: 0 6px; min-height: 46px; border-width: 0 0 1px; border-style: solid; border-color: #111111; border-radius: 0; background: #252526 linear-gradient(to top, #302f30, #353435); box-shadow: inset 0 1px rgba(238, 238, 236, 0.07); /* hide the close button separator */ }
 
 .titlebar:backdrop:not(headerbar), headerbar:backdrop { border-color: #2a2a2b; background-color: #3f3e40; background-image: none; box-shadow: inset 0 1px rgba(238, 238, 236, 0.07); transition: 200ms ease-out; }
 
@@ -600,7 +600,7 @@ searchbar > revealer > box { margin: -6px; padding: 6px; }
 
 .titlebar:not(headerbar) .subtitle, headerbar .subtitle { font-size: smaller; padding-left: 12px; padding-right: 12px; }
 
-.selection-mode .titlebar:not(headerbar), .selection-mode.titlebar:not(headerbar), .selection-mode headerbar, headerbar.selection-mode { color: #ffffff; border-color: #030c17; text-shadow: 0 -1px rgba(0, 0, 0, 0.5); background: #15539e linear-gradient(to top, #185cb0 3px, #185fb4); box-shadow: inset 0 1px rgba(29, 88, 161, 0.535); }
+.selection-mode .titlebar:not(headerbar), .selection-mode.titlebar:not(headerbar), .selection-mode headerbar, headerbar.selection-mode { color: #ffffff; border-color: #030c17; text-shadow: 0 -1px rgba(0, 0, 0, 0.5); background: #15539e linear-gradient(to top, #185cb0, #1961b9); box-shadow: inset 0 1px rgba(29, 88, 161, 0.535); }
 
 .selection-mode .titlebar:backdrop:not(headerbar), .selection-mode.titlebar:backdrop:not(headerbar), .selection-mode headerbar:backdrop, headerbar.selection-mode:backdrop { background-color: #15539e; background-image: none; box-shadow: inset 0 1px rgba(32, 91, 162, 0.442); }
 
diff --git a/gtk/theme/Adwaita/gtk-contained.css b/gtk/theme/Adwaita/gtk-contained.css
index d55a695743..efa8ae8c7c 100644
--- a/gtk/theme/Adwaita/gtk-contained.css
+++ b/gtk/theme/Adwaita/gtk-contained.css
@@ -600,7 +600,7 @@ searchbar > revealer > box { margin: -6px; padding: 6px; }
 .inline-toolbar:backdrop, searchbar > revealer > box:backdrop, .location-bar:backdrop { border-color: #d5d0cc; background-color: #eae8e6; box-shadow: none; transition: 200ms ease-out; }
 
 /*************** Header bars * */
-.titlebar:not(headerbar), headerbar { padding: 0 6px; min-height: 46px; border-width: 0 0 1px; border-style: solid; border-color: #bfb8b1; border-radius: 0; background: #dfdcd8 linear-gradient(to top, #d6d1cd, #dfdcd8 3px, #e1dedb); box-shadow: inset 0 1px rgba(255, 255, 255, 0.8); /* hide the close button separator */ }
+.titlebar:not(headerbar), headerbar { padding: 0 6px; min-height: 46px; border-width: 0 0 1px; border-style: solid; border-color: #bfb8b1; border-radius: 0; background: #dfdcd8 linear-gradient(to top, #dad6d2, #e1dedb); box-shadow: inset 0 1px rgba(255, 255, 255, 0.8); /* hide the close button separator */ }
 
 .titlebar:backdrop:not(headerbar), headerbar:backdrop { border-color: #d5d0cc; background-color: #f6f5f4; background-image: none; box-shadow: inset 0 1px rgba(255, 255, 255, 0.8); transition: 200ms ease-out; }
 
@@ -608,7 +608,7 @@ searchbar > revealer > box { margin: -6px; padding: 6px; }
 
 .titlebar:not(headerbar) .subtitle, headerbar .subtitle { font-size: smaller; padding-left: 12px; padding-right: 12px; }
 
-.selection-mode .titlebar:not(headerbar), .selection-mode.titlebar:not(headerbar), .selection-mode headerbar, headerbar.selection-mode { color: #ffffff; border-color: #185fb4; text-shadow: 0 -1px rgba(0, 0, 0, 0.5); background: #3584e4 linear-gradient(to top, #2379e2, #3584e4 3px, #3987e5); box-shadow: inset 0 1px rgba(134, 181, 239, 0.9); }
+.selection-mode .titlebar:not(headerbar), .selection-mode.titlebar:not(headerbar), .selection-mode headerbar, headerbar.selection-mode { color: #ffffff; border-color: #185fb4; text-shadow: 0 -1px rgba(0, 0, 0, 0.5); background: #3584e4 linear-gradient(to top, #2c7fe3, #3987e5); box-shadow: inset 0 1px rgba(134, 181, 239, 0.9); }
 
 .selection-mode .titlebar:backdrop:not(headerbar), .selection-mode.titlebar:backdrop:not(headerbar), .selection-mode headerbar:backdrop, headerbar.selection-mode:backdrop { background-color: #3584e4; background-image: none; box-shadow: inset 0 1px rgba(154, 194, 242, 0.88); }