Easter egg decorating

I kicked the Easter holidays off with some egg dyeing experiments. I bought a big box of biodynamic white eggs, and used everything I could find in the kitchen to try and colour them. I wanted to make something for Sage to discover and play with, mainly. But was also curious to try different things.

Clockwise from top right: Egg blown (innards used for banana pancakes), then soaked in hot water containing a little vinegar and lots of turmeric - which made it pale yellow - then dipped in hot water containing green food colouring, a little vinegar, and some sunflower oil spattered on top; Egg hardboiled (9 min) in water containing salt, a little vinegar, and a lot of red onion skins - which made it hen's egg brown, with the colour seeming to stick in the pores but wipe off elsewhere; Egg hardboiled, then dipped in hot water containing green food colouring with a spatter of sunflower oil on top; Egg treated same as the first one; Egg hardboiled (9 min) in water containing salt, a little vinegar, and as much chopped red cabbage as I could fit in - turned the water a pretty purple shade but did nothing to the egg... so then I dunked it in the red onion skin water, and smeared it with frozen-defrosting blueberries... and the purple one is one of small S's egg shaker toys.

Of the natural colours I tried, the turmeric gave by far the strongest/nicest colour - although I might try again with blueberries and raspberries, they also had potential (but I didn't want to waste them). And my cabbage didn't seem to have as strong a colour as other red cabbages, actually - could maybe try again. Or maybe use a different approach - instead of putting stuff in the cooking water could try making a puree or extract and rubbing it directly onto the egg like with the blueberries... The effect I like best is the marbling with oil on coloured water though - I guess food colouring is designed to stick well and look good...