diff --git a/client/assets/styles/vbox.less b/client/assets/styles/vbox.less
index e92a2c93..6b51f9de 100644
--- a/client/assets/styles/vbox.less
+++ b/client/assets/styles/vbox.less
@@ -64,12 +64,14 @@
             font-size: 1.25em;
 
             letter-spacing: 0.1em;
-            background-color: #996100;
+            background-color: @yellow;
+            color: black;
             border-radius: 0;
             border: 0;
             &[disabled] {
                 border: 0.1em solid @gray;
                 border-left: 0;
+                color: @gray-exists;
             };
 
             transition-property: 0;
@@ -108,7 +110,8 @@
         button {
             line-height: 1.4;
             letter-spacing: 0.1em;
-            background-color: #996100;
+            color: black;
+            background-color: @yellow;
         }
 
         .vbox-padding {