diff --git a/advotracker/assets/advotracker/default_dark.ron b/advotracker/assets/advotracker/default_dark.ron
new file mode 100644
index 0000000..c1e612f
--- /dev/null
+++ b/advotracker/assets/advotracker/default_dark.ron
@@ -0,0 +1,10 @@
+Theme (
+    styles: {
+        "container_form": (
+            base: "container",
+            properties: {
+                "border": 1,
+            },
+        ),
+    }
+)