Top bar completely white except notification bar.

[John Kim]

What happened:
The top bar was completely white except the notification bar on the far right, which still reetained the ambiance theme.

What was expected:
The entire top bar should've had the ambiance theme.

NOTE:
The moment I entered the live session, the top bar was restored to the ambiance setting.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: ubiquity 2.11.19
ProcVersionSignature: Ubuntu 3.5.0-8.8-generic 3.5.0
Uname: Linux 3.5.0-8-generic x86_64
ApportVersion: 2.4-0ubuntu6
Architecture: amd64
CasperVersion: 1.320
Date: Thu Aug 9 22:07:03 2012
InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
LiveMediaBuild: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64+mac (20120809.1)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)