H ow the heck did your child find the cookies aisle in the supermarket? And why that particular package? Is there a subsonic kid-only whistle attached to it or something?
The fact is that professional food marketers, especially children’s food marketers, put the “fiendishly” in fiendishly clever. They have done the research on that particular color scheme and advised the store to put it at that particular eye level. In a lot of ways they know (statistically anyway) your child’s visual cues and what presses her psychological buttons better than you do.