The ghosting is crap. I know this. It should be available a better version.
You can "turn off" the most of it when you edit the file
/root of your memory/Programs/xmahjongg/_tileset.
Content should be:
instead of
# Rename attached
_tileset.txt to
_tileset.
# Replace the file
/root of your memory/Programs/xmahjongg/_tileset with the new one.
The "real" tileset looks nice but it is a ghosting night mare because of the grey colour. The "dorothys" works much better.