says the painter

Mark and van Gogh have two things in common… an eye for beauty and a thing for sunflowers.  The great painter once said : “If you take some sand in your hand, if you look at it closely, and also water, and also air, they are all colourless, looked at in this way. There is no blue without yellow and without orange.”
One colour makes another sing.  Colour infuses colour with …colour and gives it zing!  Similarly, people, (especially those in love!) make each other shine and come true.  These two certainly do. She the sunflower-yellow and he the blue.