Birthday red eggs

Today is my boyfriend's birthday. Since we are living in different cities, I decided to make him some red eggs to celebrate, and eat them all myself to gain more weight.

I permanently have food colouring in the house for various art purposes, so it was an easy treat. You also need to add some white vinegar and salt into the water, to make the egg shell porous to absorb the dye. 

I don't really like eggs to be hard boiled, so I tried to break the tradition and cooked them soft, but failed.

How the red spread into the egg white