How does salt affect the coloring of flowers?

Question

So, there's 2 carnations and one of them is in a vase with water and blue food coloring. The other one was in a vase with water, blue food coloring, and salt. After 60 hours, the one with salt in it had less color than the other one. Why is that?

Answer 1

Think "osmotic pressure"

Answer 2

salt bleaches.and in this case it washed away the color.