Answer:
I personally think an innocent and sweet looking cereal would have a cream- colored box with light pink rosy designs as well as light blue designs.
Explanation:
This is an opinionated question, so the cereal box can be anything you perceive as innocent and sweet.
Hope I helped :)
Cereals such as these could be considered examples:
The golden oreo cereal could be considered innocent and sweet, but the special k cereal best fits what I was describing above.
