yep, it could be done in grayscale, or they could use color e-ink (which exists but hasn't been adopted because it isn't good enough for image reproduction or fast enough for video).
In the meantime, our iPad app [1] and browser plugins [2] integrate with the Kindle Cloud Reader.
In the meantime, our iPad app [1] and browser plugins [2] integrate with the Kindle Cloud Reader.
1: https://itunes.apple.com/us/app/beeline-reader/id938026867?m...
2: http://www.beelinereader.com/install