Are fruity pebbles named after Fred's daughter or tiny rocks?

The brand was named specifically after the character Pebbles Flintstone, which at the time of its naming, was the President of Post Cereal's favorite character due to her likeness to his own daughter. Unlike its sister cereal Cocoa Pebbles (which has remained essentially the same product, except for the addition of polydextrose in 2006), Fruity Pebbles has undergone many formula additions and variants such as "Fiesta Fruity Pebbles", "Half Sugar Fruity Pebbles", "Cinna-Crunch Pebbles" (1999-2000), "Dino Pebbles" (late 1980s- early 1990s), "Marshmallow Mania Pebbles" (2005), "Bronto Bright Pebbles", and "Bamm-Bamm Pebbles". The cereal started out with three flavors: Orange, cherry, and lemon. New flavors were added over time such as g in 1980, lime in 1984, Berry Blue in 1994, Incrediberry Purple in 1995 and Bedrock Berry Pink in 2005. A berry cereal called Bamm-Bamm Berry Pebbles was released in 2007, although they are like Fruity Pebbles, they only feature berry flavors. The formula for both versions of Pebbles had a major addition in 2006: polydextrose became a key ingredient.