diff --git a/src/blackgui/share/qss/stdwidget.qss b/src/blackgui/share/qss/stdwidget.qss
index e3387da74..ddaf58b51 100644
--- a/src/blackgui/share/qss/stdwidget.qss
+++ b/src/blackgui/share/qss/stdwidget.qss
@@ -92,6 +92,11 @@ BlackGui--Components--CSetupLoadingDialog {
   background-image: url(:/textures/icons/textures/texture-inner.jpg);
 }
 
+BlackGui--Views--CAircraftModelStatisticsDialog {
+  background: black; /* background is background color here */
+  background-image: url(:/textures/icons/textures/texture-inner.jpg);
+}
+
 /* setup load dialog details frame */
 /*
 BlackGui--Components--CSetupLoadingDialog #fr_Details {
@@ -277,6 +282,11 @@ QTabBar::tab {
   margin-right: 3px;
 }
 
+/** experimental T506 **/
+QTabBar::tab[supervisor=true] {
+  background-color: red;
+}
+
 QTabBar::tab::selected {
   background-color: rgba(0, 0, 255, 128);
 }