Drop random colors of gel food coloring onto the mayonnaise (3 colors per every ½ cup of mayo)
Swirl the colors through the mayonnaise using toothpick or skewers.
Roll one hard-boiled egg at a time through the colored mayonnaise.
When completely coated with the colored mayonnaise, allow the eggs to sit at least 30 minutes.
Wash each egg off under running warm water to reveal the colorful eggs.
Blot each egg dry with paper towels.
When dry, rub each egg with a dot of canola oil for bright and shiny eggs.
Notes
Feel free to stir a touch (⅛ teaspoon) of white vinegar to the mayonnaise if you'd like to experiment with colors.Tools and equipment;Shallow dishes, toothpicks or skewers, rubber gloves (optional), gel food color, paper towels.