This is my first screenshot, using the script. Strangely, two files were created with 5 seconds of difference in the filename (they were identical). For the conversion I used 1014x768. The black pixels in the bottom right corner are invisible in the device (even under the bezel), and they make the "usable" screen 1014x758. Still, when setting the offsets for KSM (some posts above) I had to assume the screen height is 1024, not 1014.
(The "header" is coded in the book, the footer generated by nickel (patched).)
EDIT: And the device is actually full-color
(I didn't see further double screenshots, so it must have been a glitch or a double-tap).