Here's a little test for you - how many different types of yellow can you name?
I tried this on the bus, and came up with lemon, cadmium yellow, gold, mustard and saffron before I had to switch to flowers such as daffodil yellow.
The thing is, we have one resident yellow butterfly, the Brimstone, the males of which are kind of a buttery yellow with an acid tinge. But each year a yellow butterfly from the Mediterranean…