In this book I'm reading one of the questions ask:

What is the significance of Bean finding the color blue?

What does the question mean?

Why is it important to the story that Bean found the color blue?

because everything is grey

The question is asking about the importance or symbolic meaning of Bean finding the color blue in the book you're reading. The color blue could represent something specific, such as a theme, an emotion, or an important event in the story. To understand the significance, you will need to analyze the context in which Bean finds the color blue and its possible connection to other elements or developments in the narrative.