Why do flower change colour by food colouring?

Flowers change color when soaked in food coloring because they absorb the dye through their stems via capillary action. The colored water travels up to the petals, altering their pigmentation. This process demonstrates how plants uptake nutrients and water, highlighting their vascular system's role in color change. The intensity of the color change can vary based on the concentration of the dye and the type of flower.