How did the meaning of purple gradually changed through chapters in Purple in Watchman (ch3-ch6)?

This is a reading response, please choose some panels from ch3-ch6 to analyze the use of purple( I will give you the color picture) in Watchman through chapter 3 to chapter 6. When analyzing, please remember focusing on following questions:

1: What’s the purple stands for in those 3 chapters? What’s the meaning of it?
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2: Why is the color purple keep repeating in those chapter?

3. Why purple is important, what’s the function of it?

4. How did the meaning of purple gradually changed through chapters?

Important: It is best to choose 4 to 5 panels from ch3-ch6 to analyze those questions in details. Please remember to mention the page number of those panels you choose.