SMDesigner - allow page specific overrides for all controls

[Jemt]

It would be great if every single property allowed to be overriden on specific pages. Today we have a few styles that can be applied to individual pages, but that is not sufficient.

The image above shows the current implementation of a page specific style (background color). It would be much better if there was just one control. Next to the control we could display an "expand" button which would reveal another identical control with the page specific style. Naturally this control should always be displayed by default if a value was previously selected.