Apply colors from lnf when missing
the normal defaults cascading mechanism for application colors doesn't work, as header colors would be wrong, so check if colors are missing from kdeglobals and in that case apply the colors from lnf to kdeglobals
the normal defaults cascading mechanism for application colors doesn't work, as header colors would be wrong, so check if colors are missing from kdeglobals and in that case apply the colors from lnf to kdeglobals