Once we are aware of this, we can use this visual strategy when we take photographs. We can look for elements of a subject that have similar strong colour that often contrasts with the surroundings and place then in the frame where they set up a strong “visual conversation”.
Here we see the two areas of pink relating to each other. However there are also other colour conversations -
the red of the shirt and the bag are "talking" to each other
the blue water and blue object by the red bag
the green grass in the foreground and the green of the bush on the top left.