Make ExtraBar dark when using dark mode (#2718)

* Make ExtraBar dark when using dark mode

* Update ExtraBar to use colors from MainBar in dark mode

* Update the colour

---------

Co-authored-by: zoltan-ofir <45757556+zoltan-ofir@users.noreply.github.com>

src/renderer/css/components/ExtraBar.css

@@ -13,6 +13,18 @@
     display: none;
 }
 
+#extra-bar.dark-mode {
+    background: #1F1F1F;
+}
+
+#extra-bar.dark-mode .btn-link {
+    color: rgba(243,243,243,0.7);
+}
+
+#extra-bar.dark-mode span.backLabel {
+    color: rgba(243,243,243,0.7);
+}
+
 span.backLabel {
     font-family: "Open Sans", sans-serif;
     font-weight: normal;