I'm kind of hesitant to respond here. I'm getting the feeling you don't put much stock in what I had to say over on the project thread. But I am going to give it one more shot.
The cockerel in the first photo is a buff columbian pattern. nothing splash (or red) about him. He does not appear to carry a copy of blue, let alone the two copies required to be splash.
This male could indeed produce blue chicks, but only if mated with a blue, or splash female.
Breeding a blue partridge to a gold partridge will produce zero splash chicks. For a bird to be splash it must recieve a copy of blue from each parent. The blue partridge can pass a copy off blue to half it's chicks, your gold partridge can only pass black on to it's young. So this mating should produce roughly half blue, and half black trimmed chicks.