[DanishHaq]

Actually, you could just replace these lines:

pawn Code:

SetPlayerColor(id, COLOR_RED); //Sets targets color, so the cops can easily notice him.
format(string, sizeof(string), "%s is now wanted!", name);

With this:

pawn Code:

if(wantedlevel > 0)
    {
        SetPlayerColor(id, COLOR_WHITE); //Sets targets color, so the cops can easily notice him.
        format(string, sizeof(string), "%s is no longer wanted!", name);
    }
    else
    {
        SetPlayerColor(id, COLOR_RED); //Sets target color so the cops can easily notice him.
        format(string, sizeof(string), "%s is now wanted!", name);
    }

Keep it how you want, I'm just improving your knowledge :P.