What are the two similes Bradbury uses to describe Peter's and Wendy's physical traits? What is ironic about these choices of similes?

Here are the
two similes thatuses to describe Peter and Wendy:

1. They have
   "cheeks like peppermint candy."
2. They also have "eyes like
   bright blue agate marbles."

What is ironic about these
similes is that they are in sharp contrast to the reality of the children's natures. These
descriptions connote innocent cherub-like children with wide eyes and rosy cheeks--the children
out of fairy tales, as their names also suggest. But, in the story the natures of Peter and
Wendy are much more ominous than they are innocent. For, when George tells the children that he
and Lydia are considering...