Fizzing Fireworks in a Tray A little vinegar, a little color, a lot of magic. Ingredients: - 1/2 cup baking soda - 1/2 cup vinegar - Several drops of red food coloring - Several drops of blue food coloring - Several drops of yellow food coloring Directions: 1. Begin by placing the baking soda in a tray or a shallow dish. This will be the canvas for our colorful explosion! 2. In separate small containers, mix each color of food coloring with the vinegar. You can use as many colors as you’d like,