Now we can choose colors to equations in Elements Dock, in the Attributes section.

All colors there can be choosed by clicking in the name of color.

Change-Id: I5545b292955072f9f45f31262a511cee3d70c953
Reviewed-on: https://gerrit.libreoffice.org/5414Reviewed-by: Thorsten Behrens <tbehrens@suse.com>
Tested-by: Thorsten Behrens <tbehrens@suse.com>