diff --git a/wwwroot/index.ui b/wwwroot/index.ui
index e662e6c..1006634 100644
--- a/wwwroot/index.ui
+++ b/wwwroot/index.ui
@@ -12,11 +12,11 @@
             "widgettype": "HBox",
             "options": {
                 "height": "56px",
-                "background": "#1a73e8",
                 "color": "white",
                 "alignItems": "center",
                 "padding": "0 16px",
-                "boxShadow": "0 2px 4px rgba(0,0,0,0.1)"
+                "boxShadow": "0 2px 4px rgba(0,0,0,0.1)",
+                "bgcolor": "#1a73e8"
             },
             "subwidgets": [
                 {
@@ -63,10 +63,10 @@
                     "widgettype": "VBox",
                     "options": {
                         "width": "220px",
-                        "background": "#f5f5f5",
                         "borderRight": "1px solid #e0e0e0",
                         "overflowY": "auto",
-                        "padding": "8px 0"
+                        "padding": "8px 0",
+                        "bgcolor": "#f5f5f5"
                     },
                     "subwidgets": [
                         {
@@ -121,7 +121,7 @@
                     "options": {
                         "flex": 1,
                         "overflow": "hidden",
-                        "background": "#fafafa"
+                        "bgcolor": "#fafafa"
                     },
                     "subwidgets": [
                         {
@@ -151,4 +151,4 @@
             }
         }
     ]
-}
+}
\ No newline at end of file
diff --git a/wwwroot/login.ui b/wwwroot/login.ui
index dcb4e38..cd4942a 100644
--- a/wwwroot/login.ui
+++ b/wwwroot/login.ui
@@ -4,19 +4,19 @@
     "options": {
         "width": "100%",
         "height": "100vh",
-        "background": "linear-gradient(135deg, #667eea 0%, #764ba2 100%)",
         "alignItems": "center",
-        "justifyContent": "center"
+        "justifyContent": "center",
+        "bgcolor": "linear-gradient(135deg, #667eea 0%, #764ba2 100%)"
     },
     "subwidgets": [
         {
             "widgettype": "VBox",
             "options": {
                 "width": "400px",
-                "background": "white",
                 "borderRadius": "12px",
                 "boxShadow": "0 8px 32px rgba(0,0,0,0.15)",
-                "padding": "40px 32px"
+                "padding": "40px 32px",
+                "bgcolor": "white"
             },
             "subwidgets": [
                 {