Why don some of the Pager functions work the way they do for BOSS templates?
When using a BOSS template, one for photographic printing, you can select a pre-defined image node and fill that node with a color. Or you can change the opacity of the image that is placed in that node. Pager running in a Books project is slightly different and will not allow for fill or opacity changes to pre-defined image nodes. This is something that is on the software engineers’ list of things to do. We hope they will have those Pager functions fixed in the very near future.