Some time ago I made a macrophilia flag by myself. :3
Here are the meanings of the colours:
Red:
Red stands for the power(of the giant person) and for the sexuality or/and romantic attraction to them.
White:
White stands for the pure and honest acceptance of the way you experience your attraction.
Pink:
Pink stands for being sensitive, soft and maybe too naiv with the giant person.
I like it. It might be cool to have one stripe be larger than the others to represent the size difference
That is such a cool idea! <33