 "debug", "error", "warning", "info", or "config".
   The filter lets you select which of these categories to include.

   <li><tt>colors:</tt> a boolean (<tt>true</tt> or <tt>false</tt>),
   selecting whether or not to include color coding in the log via ANSI
   escape sequences.  Color coding highlights messages by type, which
   makes it easier to scan visually for particular message types.
   It's optional because it takes up more space, so the log won't be
   able to store as long a history if it's ena