The poll does not have enough options.
For example: "I want a color reader, but could live with B&W for now"
It's quite important for me, because it DOES add a new dimension to the material. At least all coloured comics can be enjoyed as they're supposed to.
Without colours, comics would look too dark and somber like I said
here
Also, with colours, magazines and other coloured material can also be digitized. Imagine the boost of ebookreaderssales, when popular magazines and comics can be enjoyed on them. It's like opening a whole new can of buyers. (which means pricedrops and further tech. improvements)
Of course. with current technology, coloured eink would means 1/3rd of the B&W resolution. But if the selling potential is increased 10-fold, technology would improve REALLY fast.