Sudoku: Low/High contrast themes use the same color for text & background

[sudokuplayer]

Change the contrast by going to System Settings>Universal Access. Setting the
contrast to either low, high, or high/inverse causes the text color to be the
same as the background in some cases.

With High Contrast, entering a valid number results in a black number on a
black background until some other square is selected. Low Contrast does the
same thing except it's gray on gray.

In High/Inverse, a valid number will be white on white unless the square is
selected. It's impossible to play with this theme.

Original bug report
==================
Existing unity themes does not show division into 9 fields (line invisible or nearly invisible), only theme HighContrastInverse shows. But this theme does not show input numbers because they are black in black. Themecolors seem to be usesd to draw the lines.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: gnome-sudoku 1:3.2.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic i686
ApportVersion: 1.23-0ubuntu3
Architecture: i386
Date: Sun Oct 16 15:07:32 2011
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
ProcEnviron:
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-games
UpgradeStatus: Upgraded to oneiric on 2011-10-15 (1 days ago)

[sudokuplayer (opqqjwurep)]

Problem is the same with gnome 3.0

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Jeremy Bícha (jbicha)]

This might be a duplicate of bug 844385 but I'm leaving this open separately because the High Contrast theme problem might not be fixed when the missing grid is fixed.

[Jeremy Bícha (jbicha)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. I have reported this bug to the upstream developers where you can follow its status if you like: https://bugzilla.gnome.org/show_bug.cgi?id=662206

I am setting this bug's priority to High since it impacts accessibility of an application in the default Ubuntu install.