Behold! Photos of the Voyage, Oasis 3, and Libra 2 next to each other, all in KOReader.
I tried to match all the settings in KOReader (same font - KOReader's own Noto Serif, not a sideloaded font like ChareInk - same size, same margins, same contrast setting, etc.); all 3 devices have had a full screen refresh before taking the photos.
Brightness is 0 across all devices - and I've confirmed (by going to a dark room) that, in KOReader, brightness = 0 truly means "no light" on the Voyage.
I further ensured that the ambient light sensors are not messing things up by disabling auto-light on both Kindle devices.
My personal impressions (not scientific

):
- Voyage is still warmer and slightly brighter than the other two
- Oasis feels warmer than the Libra 2
- Libra 2 continues to look the most blue-green of the 3
- The sharpness advantage of the Libra 2 no longer seemed as obvious as before after all fonts/etc. are matched using a KOReader native font. Perhaps this is related to how the devices handle ChareInk font, which is my usual font?
Your thoughts?
(Ugh, why can't I adjust orientation on the last 2 photos??

)