Beat together eggs and sugar. Add butter and oil. Add vanilla extract, Add in buttermilk, Greek yogurt, lemon juice, zest of 2 Lemons, and yellow food coloring .
Sift together flour, baking powder, baking soda, and salt. Slowly add the dry ingredients to the wet ingredients.Fold in blueberries.Spoon batter into prepared bundt pan. Bake for 55 minutes.
In a medium bowl combine the powdered sugar and 2 Tablespoons of lemon juice. Whisk to blend. Drizzle glaze over the cooled bundt cake. Sprinkle with lemon zest.