Changed the text and colouring of the "Booting in..." countdown.

Signed-off-by: The Doctor <drwho@virtadpt.net>
Made the "Press [tab].." text easier to see.

Signed-off-by: The Doctor <drwho@virtadpt.net>
Moved the menu two columns to the left to line the box up with the
help text.

Signed-off-by: The Doctor <drwho@virtadpt.net>
Tried to tweak the background colouration again.  Nothing.  Not sure
what's going on.  Pushing to repo so there's a central copy.

Signed-off-by: The Doctor <drwho@virtadpt.net>