I think it is some virus, please see the picture here of a red tulip infected with virus: https://lh3.googleusercontent.com/-IhK2GHbouaQ/… Most viruses don't spread through seeds. Try to save and sow some seeds. Viruses might spread with aphids, Lygus sp. and thrips in this case, and of course with cutting flowers. Janos Z5a, Hungary
