Red-Orange: Paprika
Orange: Yellow Onions
Mustard Yellow: Turmeric
Pink: Beets
Green: Red Onions
Brown: Coffee
Blue-Gray: Blueberries
Use the dyes from the kitchen scraps to color your hard-boiled eggs. It will take a bit longer than traditional dyes, but it keeps your eggs from having toxic colors on them when you go to eat them.