Best Answer: If you're coloring white frosting or batter, start with red. ALWAYS start with the lighter color when mixing to make another.
To make each color, simply combine 1 cup of frosting with the desired number of Marshmallow: Dip toothpick in red food coloring and swirl in frosting ; Pink.
The colors red and white combined make the color pink. Pink is a tint, which means that white is added to a darker color, in this case, red.