To: @Valentinka and some others.
Well,
maybe I express my toughs not very well. Here then you a simple test to prove you the color sometime are of crucial importance.
Lady Valentinka, try the attached PDF on JBC and on Kindle or any other eink-pearl, perhaps you will understand what I mean.
What is the "purple area"? and others? Depending of desaturation algorithm implemented on your B/W eReader you could have several RBG color mapped into the same Grayscale color. Of course in Triton can occurs the same because of only 4096 colors but the cases are a "bit" less (pearl has 16 grey level).
Keep in mind I could find worse examples if I would.
Ok, so there are cases in what kindle/M92 doesn't show document well. Can you really assert kindle (or M92) is rubbish? well, I can't! Pearl eink is very fantastic for reading B/W static documents.
P.s: the PDF I used
JBC-test.pdf