Flash flip book theme of Crossover3 - Version 1.0 The third wave of crossover style templates contain three topics of pictures----green leaves, blue sky, and symphony style. To make the crossover series style, we usually choose background randomly, without a certain topic. You may not hold a certain purpose when searching themes for flippingbook, and then why not just use some crossover styles? You can use our pre-design templates to make up flippingbook easily, change flipbook to a good-looking style while saving time and energy to focus on your profit. And also saving money for free downloading.