[YourtextField setValue:[UIColor colorWithRed:97.0/255.0 green:1.0/255.0 blue:17.0/255.0 alpha:1.0] forKeyPath:@"_placeholderLabel.textColor"];
[YourtextField setValue:[UIColor colorWithRed:97.0/255.0 green:1.0/255.0 blue:17.0/255.0 alpha:1.0] forKeyPath:@"_placeholderLabel.textColor"];