Well, I am trying out a new piece of software to help get access to epubs that require color. By converting them with "Epub to PDF Convert" (found on http://www.pdf-epub-converter.com/pdf-to-epub-converter.html), I can use EPUB files meant for color readers on my Nook Glowlight.
After using it to convert several books, I love the speed of the conversion (less than 30 seconds per book) and the text is clear. What makes this a good product though is that the same package apparently can convert PDF to EPUB, PDF to Kindle, and EPUB to Kindle. Now, I have not used all of these functions as yet, especially since I do not use Kindle, but if I can move items from PDF to EPUB, then some of my knitting patterns and cookbooks can be changed in this way.
Genuinely, I think the product is pretty danged good. But no review is complete without a suggestion: When translating formats, it would be fantastic if the coverpage would translate as well. As it is now, when I converted the books, they all appear in my Nook as "Cover" with no title. This is minor though since I can just move them one at a time onto my reader.