Comment 2 for bug 942575

When new emails arrive in Thunderbird, two things should happen to the Messaging Menu (indicator-messages):

1.) the indicator-messages icon in the panel should change color to blue
2.) the "Inbox" entry within the Messaging Menu should change color to blue

Per discussion on the <email address hidden> thread, Mark Shuttleworth wrote on 28 February 2012:
"Yes, this would be consistent with our design guidelines for the indicators.
 * the indicator can turn colour [green - affirmative, blue - informational, red - warning]
 * the relevant section in the indicator (in this case, software update line in the menu) goes the same colour to create a thread from the indicator to the menu action
Mockups and bugs welcome.
Mark"