diff --git a/theme/addon-cardbook.css b/theme/addon-cardbook.css
new file mode 100644
index 0000000..bc6199d
--- /dev/null
+++ b/theme/addon-cardbook.css
@@ -0,0 +1,17 @@
+.icon-holder[type="cardbookTab"],
+.tabmail-tab[type="cardbookTab"] {
+	list-style-image: url("icons/address.svg") !important;
+}
+
+#cardbookMenuItem {
+	list-style-image: url("icons/address.svg") !important;
+}
+
+#qfb-cardbook,
+#cardbookToolbarButton {
+	list-style-image: url("icons/address.svg") !important;
+}
+
+#cardbookTabButton {
+	list-style-image: url("icons/address.svg") !important;
+}
diff --git a/theme/addons.css b/theme/addons.css
new file mode 100644
index 0000000..e0ec6d5
--- /dev/null
+++ b/theme/addons.css
@@ -0,0 +1 @@
+@import "addon-cardbook.css";
diff --git a/userChrome.css b/userChrome.css
index a6f3a1f..ba79a88 100644
--- a/userChrome.css
+++ b/userChrome.css
@@ -1 +1,2 @@
 @import "theme/icons.css";
+@import "theme/addons.css";