Let's see. Their line can refer to either their selective breeding, such as the goldblush mojaves or the lemon pastels/graziani pastels. Their line could also refer to the snake that they imported such as the amir line pastel aka the citrus pastel. So yes to both
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A ringer is the orangey coloration that creeps up from the belly. Sometimes the ringer is barely noticeable because it junks up the pattern just a tiny bit, and you can see some odd coloration. Sometimes it creeps up really high, and you can see white coming up from the belly! Dave Green is working with "extreme ringer" champagnes that are pretty much half champ and half white LOL.
The paradox is referring to the instance where you can see traits of another morph or normal coloration/pattern in the pattern of a morph or normal. For example, pacific coast reptiles has a het ultramel male that looks like a normal ball python, except some parts of the pattern are ultramel colored. Albinos will sometimes have paradox spots where a section looks normal.