Classy, restrained, distinctive liveries back then. BOAC, Pan Am, TWA, JAL and others. BA should reinstate the Speedbird widget.
Now liveries are too gaudy, like a three year old with crayons. Some look like toothpaste tubes, (American)?
What's the difference between a modern airliner and a toothpaste tube? You squeeze the contents out of a toothpaste tube.