diff --git a/docs/css/theme.css b/docs/css/theme.css
index 3c275f8f..d015e230 100644
--- a/docs/css/theme.css
+++ b/docs/css/theme.css
@@ -12,4 +12,8 @@ a {
 
 .wy-menu-vertical a, .wy-side-nav-search>a {
     color: #ffffff;
-}
\ No newline at end of file
+}
+
+.wy-side-nav-search .version-switch select option {
+    color: #404040;
+}