In 1997, proper center alignment of train numbers was restored, the "service" car symbols were separated from class numbers into their own row, the layout was changed to portrait, and the general "modern" aesthetic toned down. In 1998, they finally stopped redesigning tables every frigging year and instead added highlights back - and multi-colored! IC/EC/EN trains got green, accelerat (fast) got red and some other trains got blue (those that run only on some days?).
https://timetableworld.com/ttw-viewer.php?token=df829866-b0a8-485f-844e-df1323e6a01d
2000 had the route map with a hypsometric background and, for the first time, every "magistrale" getting its own color and lines belonging to its numbering zone getting colored accordingly. Third-party advertising business apparently dried up in the early oughts.
https://timetableworld.com/ttw-viewer.php?token=70ff1a1e-8b89-4727-a1ae-33d35d97e013
In 2003/4, the colored highlights were removed again (but some railway ads were still printed in color).
In 2006/7 the magistrale colors were gone, but marking of double-tracked and electrified sections on the map made a return.
https://timetableworld.com/ttw-viewer.php?token=488c6f2f-f0aa-4dfd-9772-1acf7c30b42d
2013/14 is the last timetable in the collection.
https://timetableworld.com/ttw-viewer.php?token=a1c06bcd-f92b-4283-8292-b47d2e8eaaa6
16/16