Horst, even though these intermedias have good forms, I really do not like pelorics, so flammeas and aquinas is out of question. They seem to pass on the peloric nature to their offspring. Yes the cross with Ennio will most probably not result in a coerulea, but there is a chance that some might turn out close. The real search would is then for a good quality non peloric intermedia coerulea with good form. Also how about crossing this present walkerinter with C. walkeriana coerulea 'Blue moon'. I have it, not in bloom currently though. Will have to wait. Let me know what you think.