Update app.py

app.py

@@ -83,6 +83,10 @@ EDITOR_CSS = """
 #analysis-code .ͼy { color: #98c379 !important; } /* strings */
 #analysis-code .ͼx { color: #c678dd !important; } /* keywords */
 #analysis-code .ͼz { color: #d3869b !important; } /* brackets */
+
+#analysis-code span[class*="r"] {
+    color: red !important;
+}
 """