Most coloured text is shades of murk on mono eink. Works on azw3 too I think as well as any epub.
The very ancient blackish, two greys and one light grey eink panels are likely early 2005 to 2007 LRF only Sony. The first Kindle was 2007 & 2008 and also only four level grey scale. It uses old mobi. Sony maybe went to epub about 2009.
The Kindle 3 (16 level grey) was 2010 but only got azw3 as a later firmware update, not sure when, possibly around 2011 or 2012.
Last edited by Quoth; 04-08-2023 at 12:25 PM.
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