Fix multi-line background fill and add user_colors.json error handling

pytchat_listener.py

@@ -43,8 +43,12 @@ user_color_map = {}
 def load_user_colors():
     global user_color_map
     if os.path.exists(USER_COLORS_FILE):
-        with open(USER_COLORS_FILE, 'r') as f:
-            user_color_map = json.load(f)
+        try:
+            with open(USER_COLORS_FILE, 'r') as f:
+                user_color_map = json.load(f)
+        except json.JSONDecodeError:
+            console.print(f"[red]Error loading {USER_COLORS_FILE}. File might be corrupted. Starting with empty colors.[/red]")
+            user_color_map = {}
 
 def save_user_colors():
     with open(USER_COLORS_FILE, 'w') as f:
@@ -108,7 +112,7 @@ def main():
                 # Format message for terminal
                 # Use rich.text.Text to build the message with styles
                 full_message_text = Text()
-                full_message_text.append(f"{author_display_name}: ", style=username_style)
+                full_message_text.append(f"[{username_style}]{author_display_name}[/]: ")
                 full_message_text.append(message_text)
 
                 # Alternate background styles
@@ -116,7 +120,8 @@ def main():
                 
                 # Print the message, letting rich handle wrapping and filling the width
                 # The 'width' parameter ensures the background fills the terminal width
-                console.print(full_message_text, style=background_style, width=console.width, overflow="crop")
+                # We remove the manual padding and rely on rich's internal handling.
+                console.print(full_message_text, style=background_style, width=console.width)
                 log_file.write(f"{datetime.now().strftime("%H:%M:%S")} {full_message_text.plain}\n")
                 message_count += 1
 
@@ -132,4 +137,4 @@ def main():
             console.print(f"[green]Chat log saved to {log_filename}[/green]")
 
 if __name__ == '__main__':
-    main()
+    main()