remove use of deprecated KGlobalSettings color getter
remove use of deprecated KGlobalSettings color getter

svn path=/trunk/KDE/kdepim/; revision=717077

lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi