Preheat oven to 350 degrees (F). Line muffin cups with paper liners and set aside.
In a medium bowl, sift together dry ingredients: flour, sugar, baking soda, salt and cocoa powder.
In a stand mixer, mix together wet ingredients: oil, applesauce, yogurt, eggs, food coloring, vinegar and vanilla. (Optional: Add a few drops of blue food coloring to deepen the red color)
Add flour mixture to the wet ingredients in three small batches until just combined, and a smooth batter is formed. Do not overmix.
Fill muffin cups 2/3 full and tap on flat surface to ensure no air bubbles.
Bake accordingly: Mini-size: Bake 13-15 mins // Regular size: Bake 15-18 mins
Use a toothpick to check for doneness and when it comes out clean, move muffin tins to a wire rack to cool for about 10 minutes.