Lufthansa was the first airline to fly the Boeing 747-8 Intercontinental and now has 16 of the type in service. Over the history of the airline and the 747 program, Lufthansa has been a very good customer. They have operated the 747-100, 200, & 400 (with a good portion of those 747-400s still flying).
The airline, as a whole, has been around since 1926 (in some form or another), during which time they have been through a number of liveries. What better way for an airline to receive their latest aircraft than to paint it in an retro livery?