fdo#75107: make colors and styles localizable in Agenda Wizard

Change-Id: I231370da5ee7185888ec95ba1fb64f678a7c8ea3
Reviewed-on: https://gerrit.libreoffice.org/11412
Reviewed-by: Andras Timar <andras.timar@collabora.com>
Tested-by: Andras Timar <andras.timar@collabora.com>