This uses the same background color then the edit entries and
changes the focus from the gray filled rectangle to a non-filled
rectangle using the general highlight color.

Change-Id: I4b44811e768266ccd2081a8e3ef61483a803da3b
Reviewed-on: https://gerrit.libreoffice.org/72795Reviewed-by: Heiko Tietze <tietze.heiko@gmail.com>
Tested-by: Jenkins
Reviewed-by: Jan-Marek Glogowski <glogow@fbihome.de>