All done now bar the dyeing - would be magnificent to comply fully; only John Green will know... but he deserves the treat...
What fun! Couldn't make sense of the misprints except with hindsight, so PDM more luck than judgement, from spotting the second thematic hint answer in the grid and a connective flash - still haven't spoted the first word. Nearly chased after another great creation on the theme, but thought the home-grown one more likely.
Some wonderful new words - thank you, Quinapalus.