SYMPTOM:
When a user changes the color of a Report Services Document Layout, and executes the document in Strategy Mobile 9.4.x and 10.x, they will notice that not all of the document space has changed to the custom color, as shown below.

Notice the textbox that denotes the bottom of the layout, however, some extra white space appears under it.
STEPS TO REPRODUCE:



Note: The amount of white space shown will depend on how closely the size of the document layout matches the iPad screen resolution. The closer it matches, the less white space will appear.
CAUSE:
This is working as designed in Strategy Mobile 9.4.x and 10.x. The layout property is not the defining property of the entire document background.
ACTION:
In order to set the color of document background, take the following steps:
