I’m also quite happy with my Libra Colour, which I’ve been using daily for a couple of months now. My experience in a nutshell:
- The resolution of black on white text is excellent, IMO on par with my Oasis
- The device is very fast and responsive
- Colors to me are an unnecessary but fun addition; I particularly enjoy having the cover of the book in colors when the device is off. Joy is in the little things.
- I personally do not experience the reported screen door or rainbow effect. The screen does look a bit grainy but it does not affect the clarity or overall reading experience
- The buttons are great to have but I do find them a bit too “clickety”
- The device feels quite plasticky but the pearly white shade does look good
- The contrast is not an issue indoors, but I do find the screen too dark to comfortably read outdoors
- The front light distribution is rather uneven, more so than on my Oasis
- The stock reader is decent but I won’t elaborate on it as I mostly use KOReader, which is well supported
Overall I think the Libra Colour is a great device for people who read mostly at home. I skip the case so I can enjoy the book covers in color when I’m not reading; it does somewhat feel a bit like having a physical book laying on the table or the couch. Those who like to read on the go (e.g. in the train) might however find the screen very dark and the contrast too low under natural light; I personally never use it outdoors.