Requires color. Requires color! Requires color!
Every·one will remember 1st·Contact – knew that going in. Likewise no·one will ever remember 2nd·Contact, unless of·course some·thing goes horribly wrong.
Most online .epub preview utilities were originally intended for black-and-white, and it shows. The added features are always the clunkiest, thus most such previewers are truly pathetic at rendering color. Your own color e-reader device, if you have one, is likely far better, could hardly be any worse. But you'll never know that from the online preview. If you could simply download an excerpt for free, you could try it out on your own color e-reader and know right away whether it's compatible, if only such a download were available, especially if it contains an entire sub·story in·and·of itself, not just another teaser.
In that case, for the novels in the Strains series, you're in luck, particularly in the case of An Imperfect Storm.