Update PanelInterface.py

PanelInterface.py

@@ -106,7 +106,7 @@ function showModal(event, id) {
     modal.style.top = "50%%";
     modal.style.left = "50%%";
     modal.style.transform = "translate(-50%%, -50%%)";
-    modal.style.background = "white";
+    modal.style.background = "black";
     modal.style.padding = "20px";
     modal.style.border = "1px solid #ccc";
     modal.style.zIndex = 1000;