idk whether to put this in the food section or book section. sorry

i inherited a cookbook from my grandmother called the cake mix bible so i looked it up and found this

but my copy and every other picture of it i can find on the internet looks like this

i've been looking through my copy and i can't even find a recipe for the heart shaped cake. i can find one for a different heart shaped cake that doesn't use any marshmallows but there's no info i can find about the red one. does anyone know what it is?