
The one on the left was boiled together with smashed blueberries and then stayed in the juice for 4 hours
the one in the middle vertical was first hard boiled and then was placed in the blueberry boiled juice.
The one in the left was first hard boiled and then was placed in the blueberry boiled juice together with vinegar and became more fuchsia.
The one that is horizontal was first hard boiled and then was placed in the blueberry boiled juice for a couple of hours and then placed in boiled turmeric water


In the left foto are the mashed blueberries and in the right: on the upper bowl is the boiled blueberry juice and the bowl below is the boiled blueberry juice with vinegar, that became a bit fuchsia.
You can also skip boiling the juice. You an hard boil the egg and then just put blueberries on top of the boiled egg and let them overnight. See the fotos below. You will get similar colors with the coloring from the blood oranges but here you get also green notes:
See here the colors from the blood oranges: Purple and blue marble – blood orange – Natural egg coloring

