Pref panel to specify colors for a regexp.

Regular expressions will be matched against 'tag=<#tag name#>' for tag
name view and -[LoggerMessage description] for message view.

Colors can be a color name available in NSColor or #RRGGBB strings.
Better prefs sync.
Accept 'bold' suffix.

Now you can enter 'bold' followed by space followed by a color.
Example: bold green