Book Title and Author fields ignore § formatting

The § formatting symbol is ignored in the Title and Author fields of a book.

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I want to give color or formatting to the Title or Author fields of a book. However, it simply displays the text as "5Title" or "kAuthor".

Here's a command:

/give @p written_book{pages:['["",{"text":"\\n\\n\\n\\n\\n\\n"},{"text":"Curse of Blinding","obfuscated":true,"clickEvent":{"action":"run_command","value":"/effect give @p blindness 60"}}]'],title:"§5Title",author:"§kAuthor"}