How to Fix Unreadable Directory Listings within Shell
You may find that when listing directories within the shell and when using a black background that the directory names aren't clearly readable.
To resolve this issue the following command and then log back in. This command will issue a find and replace against the color setting (for directory listings) within the necessary configuration file.
sed -i 's/DIR 00;34/DIR 00;31/g' /etc/DIR_COLORS.xterm