There is now a lot of coloring books available on the Internet, as putting colours on a black and white picture is supposed to be a relaxing activity for adults ("An effective way to relax and relieve stress as well as enhance creativity and imagination"). Here are some Bob Dylan-inspired items:

BOB DYLAN INSPIRED COLORING BOOK, by Trevor King, CreateSpace Independent Publishing Platform 2017, 32 pages. The bottom of the scan seems to be missing, but it is not: this is the front cover of the book. ISBN 9781544892054 |

BOB DYLAN SNARKY COLORING BOOK, by Ann Lugosi, independently published 2019, 34 pages, ISBN 9781704565293
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BOB DYLAN LOVE COLORING BOOK, - A COLLECTIBLE UNAUTHORIZED BIOGRAPHY, by Hood Theorem, Independently published (April 20, 2019),
50 pages. ISBN 9781095319659
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 AN ADULT COLORING BOOK, by Rose Ripley, Independently published (June 26 2019), paperback, 34 pages. ISBN 9781076323552
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 AN ADULT COLORING BOOK by Skyler Rankin. Scribble Press (March 5, 2019), 62 pages. Colouring is 'perfect for relaxation and stress relief; two copies of each image, for two chances to color!' ISBN 9781798815861
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 BOB DYLAN COLORING BOOK Independently published 2020, 60 pages. ISBN 9798586515063
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 BOB DYLAN COLORING BOOK Independently published 2020, 60 pages. ISBN 9798586515117
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 BOB DYLAN COLORING BOOK Independently published 2020, 60 pages. ISBN 9798586514981
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 BOB DYLAN COLORING BOOK Independently published 2021, 70 pages. ISBN 9798458576949 |

EMPOWERMENT COLORING BOOK, by Kelly Higgins, Independently published 2021, 48 pages. ISBN 979874139260 |
 TEEN COLORING BOOK by Tina McCarthy, Independently published 2021, 45 pages. ISBN 9798727844045 |
 CLASSIC ALBUMS COLORING BOOK Red Planet Books, UK
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 BOB DYLAN COLORING BOOK Independently published 2021, 61 pages. ISBN 9798467355177 |
 BOB DYLAN COLORING BOOK Independently published 2021, 61 pages. ISBN 9798467355252
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 BOB DYLAN COLORING BOOK Independently published 2021, 70 pages. ISBN 9798458576901 |