I haven't seen that happen here with Papaver varieties Dee, the photos on the Dutch site (who supply plugs of many plants as growers) will have the correct photos. I have seen most of them offered over the years and they have been true to name. There might be instances of people growing from seed from a named variety but I think that wouldn' work so well as I have tried it and they cross with others like crazy. In the case of Coral Reef by T&M I would think they are under controlled pollination.