diff --git a/src/_h5ai/client/css/inc/general.less b/src/_h5ai/client/css/inc/general.less
index 6723e1ef..1eaa098e 100644
--- a/src/_h5ai/client/css/inc/general.less
+++ b/src/_h5ai/client/css/inc/general.less
@@ -7,7 +7,8 @@
 
 @col-light: #ffffff;
 @col-lightgray: #fafafa;
-@col-darkgray: #eeeeee;
+// @col-darkgray: #eeeeee;
+@col-darkgray: #f3f3f3;
 // @col-dark: #333;
 @col-dark: #212121;