Some styling was needed for the indicator

assets/css/cosmo/overrides.css

@@ -39,3 +39,7 @@ TD.qrz {
 	--bs-accordion-btn-bg: #f9f9f9;
 	--bs-accordion-active-bg: #f9f9f9;
 }
+
+.dxccsummaryheader:after {
+	background-image: linear-gradient(to right, black 0, black 12ch, black 12ch, black 100%);
+}

assets/css/cosmo_wide/overrides.css

@@ -103,3 +103,6 @@ TD.qrz {
 	--bs-accordion-active-bg: #f9f9f9;
 }
 
+.dxccsummaryheader:after {
+	background-image: linear-gradient(to right, black 0, black 12ch, black 12ch, black 100%);
+}

assets/css/default/overrides.css

@@ -57,3 +57,7 @@ thead > tr > td {
 	--bs-accordion-btn-bg: #f9f9f9;
 	--bs-accordion-active-bg: #f9f9f9;
 }
+
+.dxccsummaryheader:after {
+	background-image: linear-gradient(to right, black 0, black 12ch, black 12ch, black 100%);
+}

assets/css/default_wide/overrides.css

@@ -97,3 +97,7 @@ thead > tr > td {
 	--bs-accordion-btn-bg: #f9f9f9;
 	--bs-accordion-active-bg: #f9f9f9;
 }
+
+.dxccsummaryheader:after {
+	background-image: linear-gradient(to right, black 0, black 12ch, black 12ch, black 100%);
+}

assets/css/general.css

@@ -757,6 +757,12 @@ label {
 	content: '\02795'; /* Unicode character for "plus" sign (+) */
 	float: right;
 	margin-left: 5px;
+	color: #000000;
+	background-image: linear-gradient(to right, white 0, white 12ch, black 12ch, black 100%);
+    -webkit-background-clip: text;
+    background-clip: text;
+    -webkit-text-fill-color: transparent;
+    -webkit-text-fill-color: transparent;
 }
 
 .dxccsummaryheaderopened:after {