Selected mail heading text alignment.
Recieved attachment list background color (readability issue).

Lightning - missing calendar & task icon bug fix.
New mail popup text and background colors (readability).

Lighting bug fixes...
* New Tasks toolbox background and icons (Vista/Win7 specific).
* New Events toolbox background and icons (Vista/Win7 specific).
* Events/Tasks panel & sidebar highlights.
* Invite Attendees - date/time heading and time pickers.

Unread mail icon enlarged.
Address text color (To:) corrected.
Highlighting improvements.
Additional extension support.

Thunderbird 5 compatibility.
Text color inheritance for better extension support.
Minor fixes with layout and textures.

Thunderbird Update History (not addons): readability.
Thread list readability.
Add-on Collector: width problem fixed.
Table2Clipboard: Settings link color readability.
Stylish: button text color fixed.
InfoRSS:
Welcome text color fixed.
Option -> Basic tab: Feed/Group readability.
Update Notifier: Tray popup readability.
Lightning: label colour corrections.
Support for a number of other extensions.
Highlights: redone as requested.

Bug fix for text color on disabled menu items.
Toolbar icons: difference between enabled and disabled made obvious.