This adds support for theme colors for multiple properties that
are stored in SvxBoxItem and SvxBrushItem / XFillColorItem. For
those items the ComplexColor member variable was introduced.
The UNO properties for the colors are added.
The properties with the added support includes paragraph border
and background + styles, page border and background, frame border
and background + styles.
The ThemeColorChanges has been extended to support changing the
colors for those propertes.
Color picker and tab pages have been fixed so they pass or set
the theme color properties to the items.
Change-Id: Id27272f5c4a448703a62a759d829e8a9540066e4
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/152397
Tested-by: Jenkins
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>