Originally Posted by
Palal
It depends on the airline.
Most airlines use baggage stickers using a single stock. If the airline operates flights only to/from (but not within) the EU customs union, it will use either a white or a green stock. If it operates flights within the customs union, it will use green stock.
I dunno - I've departed LHR on BA, CDG on AF, AMS on KL, and FCO on AZ - all within the last year, and never gotten a green sticker. It may be that that happens in other airports, but not when I've flown.