Puntuado con 1 de 5 estrellas
'Noia 4' v.1.6.9 and above is badly broken.
There's a tiled background in the sidebar of FF behind the icons (I've got FF11 on XP Home SP3).
As for now, the only solution is downgrading 'Noia 4' to v.220.127.116.11.
The 'Restart FF' dialog while installing or updating an add-on is showing two 'Close' buttons
(= red dot behind white cross) if theme is set to 'Noia 4'.
This 2nd issue can't be solved by the mentioned downgrade, though.
Guess, I'll be back with more stars after a fixed version of 'Noia 4' is released.
The first issue was already fixed by an update you can find here: https://addons.mozilla.org/addon/noia-4/versions/
The second one where you see two crosses isn't an issue or at least never was.
Could you go to the support forum and provide screenshots, if the first issue is still there after upgrading to v1,6.9.2