If that's the only problem left, can't you just edit the *.desktop file created when you used the "Add to homescreen" button and change the .png file that the Icon value points to?
/home/user/.local/share/applications
[Desktop Entry] Encoding=UTF-8 Type=Link Name=Omnix URL=file:///home/user/MyDocs/Documents/smsN9.html Icon=/usr/share/themes/blanco/meegotouch/icons/icon-l-mail.png