diff --git a/frontend/src/pages/admin/AuditLog.tsx b/frontend/src/pages/admin/AuditLog.tsx
index 827e33d..08da077 100644
--- a/frontend/src/pages/admin/AuditLog.tsx
+++ b/frontend/src/pages/admin/AuditLog.tsx
@@ -187,7 +187,7 @@ const JsonDiffViewer: React.FC<JsonDiffViewerProps> = ({ oldValue, newValue }) =
             variant="outlined"
             sx={{
               p: 1.5, mt: 0.5,
-              backgroundColor: 'error.50',
+              backgroundColor: 'error.light',
               fontFamily: 'monospace',
               fontSize: '0.75rem',
               overflowX: 'auto',
@@ -207,7 +207,7 @@ const JsonDiffViewer: React.FC<JsonDiffViewerProps> = ({ oldValue, newValue }) =
             variant="outlined"
             sx={{
               p: 1.5, mt: 0.5,
-              backgroundColor: 'success.50',
+              backgroundColor: 'success.light',
               fontFamily: 'monospace',
               fontSize: '0.75rem',
               overflowX: 'auto',