You can PhotoRead single pages the same as two pages, just no blip page will appear since you're only viewing one page.
White text on black background is very hard on the eyes. Sepia might be preferred by some as it reduces the glare. One of the reasons that the Kindle reader is popular is that it doesn't glare like a computer screen does and as a result it is faster and easier to read from the kindle screen.
Ultimately it's personal preference. You might like to play with PhotoReading white text on a black background. I wouldn't use it for activation as I've pointed out it's very hard on the eyes.
Alex
