People often think of France when they hear mention of the croissant, but Austria is the true country of birth for this pastry. It’s Viennese, not French. The ‘kipferl’ was believed to be the spiritual ancestor of the croissant. It was created as a propaganda technique by the Austrians, made in the shape of the Crescent Moon of Islam so that when Austrians ate it they would be “Devouring” the Ottomans.
The same person who puts it on a pizza.
Butter can also be white based on the milk/cream it is made from. My shop buys a lot of farm fresh milk for ice cream. We use some of the cream to make butter. for a while, it was completely white because the cows only got hay but we recently had good rain and now that they got fresh grass the butter is yellow.