This worked correctly while compiled against Qt 5.10.0, but after
installing Qt 5.10.1 the behavior was just wrong. And as there
seems no way to color the background of a Kirigami SwipeListItem,
just revert this, and accept the (slightly) inconsistent coloring
of the page (for now).
This reverts commit 6700715b5dc1d314bc73800d8f8ec387d4d20d16.
Signed-off-by: Jan Mulder <jlmulder@xs4all.nl>
564e134bba
