Masteries has released the first Beta version of his Playstation 2 port (homebrew). This beta fixes the colors issue (in 32 bits only) and the sound is completely functional.
You can download it here: http://forum.bennugd.org/index.php?action=dlattach;topic=3425.0;attach=2841
You can also test the port following the instructions in the forum post (spanish only):
http://forum.bennugd.org/index.php?topic=3425.0