I once read a book with the location of the story in the South of France. There was a vivid description of the yellow flowers that blossomed in abundance. There was a fiesta or celebration of some sort and it was either a love or an adventure story. I remember mimosa being mentioned and ever since, I associate it with the yellow colour. There is a beautiful plant with yellow flowers in my garden. I have nicknamed it mimosa. Guess what, when I went to France I forgot to find the real mimosa.