Might help you a little. Davimee (a newly enrolled member of our group) was kind enough to post a photo the other day of a purple PP.
https://www.mobileread.com/forums/sho...9&postcount=13 . There was also a forum member who happened to disassemble their Slate Blue and posted pics (
https://wiki.mobileread.com/wiki/File:V5BackOutside.jpg).
From those pics you might get a better sense of which colour you prefer.