diff --git a/bemani/frontend/static/themes/dark/form.css b/bemani/frontend/static/themes/dark/form.css
index b4684ad..9bdbc77 100644
--- a/bemani/frontend/static/themes/dark/form.css
+++ b/bemani/frontend/static/themes/dark/form.css
@@ -59,6 +59,11 @@ input[type="button"], button.nav, button.toggle, button.edit, button.add, button
     margin-right: 5px;
 }
 
+button.btn-default {
+    color: #b0b1b2 ! important;
+    background: #3c3c3c ! important;
+}
+
 input[type="submit"], input[type="button"], button {
     border-radius: 0px;
     padding-top: 4px;
diff --git a/bemani/frontend/static/themes/dark/site.css b/bemani/frontend/static/themes/dark/site.css
index 30b4c0f..6b5abfb 100644
--- a/bemani/frontend/static/themes/dark/site.css
+++ b/bemani/frontend/static/themes/dark/site.css
@@ -62,6 +62,10 @@ div.navigation {
     }
 }
 
+div.jconfirm-box {
+    background: #2d2d2d ! important;
+}
+
 @media only screen and (hover: none) {
     .tinynav {
         display: inline-block;