Final answer:
The text explicitly states that brown eggs generally cost more than white eggs, and their color is related to the chicken's feather color.
Step-by-step explanation:
The text says explicitly about brown eggs that they typically cost slightly more than white eggs. This difference in price is not explained by the size of the eggs or the attention they draw from shoppers, but might be related to perceived quality differences or production costs. The color of the eggs themselves is determined by the breed of the chicken, with white eggs laid by chickens with white feathers, and brown eggs laid by chickens with red feathers.