diff --git a/gtk-3.0/_others.scss b/gtk-3.0/_others.scss
new file mode 100644
index 00000000..5a69a158
--- /dev/null
+++ b/gtk-3.0/_others.scss
@@ -0,0 +1,9 @@
+@import 'colors';
+
+window.background.chromium {
+  background-color: $bg_color;
+
+  button { // tab borders
+    border-color: $borders_color;
+  }
+}
diff --git a/gtk-3.0/gtk-contained.css b/gtk-3.0/gtk-contained.css
index 54d69600..0619e5f0 100644
--- a/gtk-3.0/gtk-contained.css
+++ b/gtk-3.0/gtk-contained.css
@@ -4750,3 +4750,8 @@ UnityPanelWidget,
   -gtk-icon-source: -gtk-icontheme("process-working-symbolic");
   animation: playbackmenuitem_spinner 1s infinite linear;
   color: #3c3c3c; }
+
+window.background.chromium {
+  background-color: #cecece; }
+  window.background.chromium button {
+    border-color: #828282; }
diff --git a/gtk-3.0/gtk-contained.scss b/gtk-3.0/gtk-contained.scss
index e1ed31bb..db81a195 100644
--- a/gtk-3.0/gtk-contained.scss
+++ b/gtk-3.0/gtk-contained.scss
@@ -14,3 +14,4 @@ $variant: 'light';
 @import 'lightdm-gtk-greeter';
 @import 'gnome-apps';
 @import 'unity';
+@import 'others';