I've searched the net for pics and interestingly i found several readers in black, which had a small white inner frame.
What makes me worry about the white M92, is that it's whiter than the ePaper. I could imagine reading outside in sunlight could be worse compared to the black frame.
Obviously the best solution would be a frame with the same color as the epaper's "background". But this would sell not well because of the strange greyish white, i guess. So we have such a wonderful highly advanced technology and because of the impression in advertisements the benefits are diminished by marketing aspects.

As an engineer, this hurts the most because the main principle of good engineering - form follows function - is more and more neglected by marketing considerations.