Sienkiewicz's 20 page TMNT story Inside Out is reproduced in color, in black & white, in layouts, and in Kevin Eastman's thumbnails.
From the publisher:
Collecting TMNT co-creator Kevin Eastman and artist extraordinaire Bill Sienkiewicz's five-part story from TMNT Universe Volume One, now with a ton of new behind-the-scenes features.
"Inside Out" may be the title of the story, but it's also how you're seeing the art. Get inside the creative process between two of the biggest names in comics with the Teenage Mutant Ninja Turtles: Inside Out Director's Cut. Witness the transition from script to art with Eastman's layouts and design notes. This is a rare opportunity to see two masters of the medium collaborate, and the director's cut gives you VIP access.