Fix: Explicitly pass change_role_color=True when switching modes after bipolar argument

When an argument ends and a winner is determined, the bot now explicitly
passes all mode change parameters (change_username, change_pfp, change_nicknames,
change_role_color) to ensure the winner's role color is properly restored.

- Evil Miku wins: Saves current color, switches to dark red (#D60004)
- Regular Miku wins: Restores previously saved color (from before Evil Mode)

This ensures the visual identity matches the active persona after arguments.

bot/utils/bipolar_mode.py

@@ -934,14 +934,14 @@ async def run_argument(channel: discord.TextChannel, client, trigger_context: st
                     # Record result in scoreboard with arbiter's reasoning
                     scoreboard = record_argument_result(winner, exchange_count, judgment)
                     
-                    # Switch to winner's mode
+                    # Switch to winner's mode (including role color)
                     from utils.evil_mode import apply_evil_mode_changes, revert_evil_mode_changes
                     if winner == "evil":
                         print("👿 Evil Miku won! Switching to Evil Mode...")
-                        await apply_evil_mode_changes(client)
+                        await apply_evil_mode_changes(client, change_username=True, change_pfp=True, change_nicknames=True, change_role_color=True)
                     else:
                         print("💙 Hatsune Miku won! Switching to Normal Mode...")
-                        await revert_evil_mode_changes(client)
+                        await revert_evil_mode_changes(client, change_username=True, change_pfp=True, change_nicknames=True, change_role_color=True)
                     
                     # Clean up argument conversation history
                     try: