Yes, if a faithful Christian has come to have gray or white hair, such a mature appearance is beautiful in God’s sight.
فَهَلْ تَتَبَنَّى نَظْرَةَ يَهْوَه إِلَى إِخْوَتِكَ وَأَخَوَاتِكَ ٱلْمُسِنِّينَ ؟‏