Make your own natural egg colours with coffee
When colouring eggs with ground coffee or coffee grounds, it's important that you only use white eggs. Take 100 g of ground coffee, add to 1 litre of water and bring to the boil. Leave to infuse for around 30 minutes, then hard boil the eggs in the water. You can use coffee grounds in place of ground coffee if you want a slightly lighter shade of brown.
For a deeper colour, you can add onion skins to the boiling coffee. This will produce wonderful, chocolate brown-coloured eggs.
To produce decorative patterns on the eggs, before colouring place flowers, leaves or grasses on the eggs, fixing them with an old pair of tights, for example. Alternatively, take a candle and paint patterns on the egg. These areas then remain white during the colouring process.