Easter Eggs Dyed with Onion Skins!

Like every year, the day when we dye our Easter eggs is approaching once again. Purely for convenience, most of us use artificial dyes. But is the dye that soaks into the egg safe?
Both the European Food Safety Authority (EFSA) and the US Food and Drug Administration (FDA) steer producers and consumers toward natural colorings. Artificial colorings have been blamed for carcinogenesis, allergic reactions, nervousness and much more.
Personally, I've been choosing this onion technique for years now:
Little secrets for guaranteed success:
1) Collect plenty of onion skins, and if you don't have many, boil the eggs in a smaller pot in more batches.
2) Boil at a very low temperature for quite a long time.
3) If you're not sure they're done, take out one egg and test it before taking the whole pot off.
4) Don't leave the eggs in the liquid overnight; take them out right after boiling.
5) Prefer skins from yellow onions; they give a more vivid shade.
Their color comes out vivid, and they look every bit as good as eggs dyed with chemical dyes.
Good luck!!!
Happy Easter and Kali Anastasi (a blessed Resurrection)!