Question about cauliflowers

No it dont work like that I am afraid, they have their own little clock that says, I am a summer veg so when the temps drop I need to produce my flower head which in turn turns to seed head etc in time before it gets so cold I die, kind of.
Graffiti, which I believe is the one you refer too is realy a summer cauli, sown in spring for july/ august harvest. You will need to grow and winter hardy version if you want them thoughout the winter.

Cauli's are renowed to break hearts by their growing nature. 

It has been a strange end to the summer, Autumn has been a little wierd too, perhaps don't give up and give them a go next year.
Maybe have a go at Graffiti, I have excellent results with it, crops mid summer. Here is one I grew earlier....