diff --git a/packages/studio-theme/src/theme/studio-dark/ctrl.scss b/packages/studio-theme/src/theme/studio-dark/ctrl.scss
index ad84f2fae59e366d794f883d9f344bb34ac96f6a..1a2ee0d9f8264900d25b3d7b2ec435c6c3622c80 100644
--- a/packages/studio-theme/src/theme/studio-dark/ctrl.scss
+++ b/packages/studio-theme/src/theme/studio-dark/ctrl.scss
@@ -264,6 +264,7 @@
         #{getCssVarName(form-group, header, height)}: 36px;
         #{getCssVarName(form-group, caption, font-weight)}: getCssVar(font-weight, regular);
         #{getCssVarName(form-group, caption, font-size)}: getCssVar(font-size, header, 6);
+        #{getCssVarName(form-group, show-more-color)}: getCssVar(color, primary, light, active);
     
         .#{bem(form-group-header, left)} {
           display: flex;