Paradox has nothing to do with this....
People noticed a trend of these Pied "markers", it works well for trying to pick out possible hets. Now a bunch of people think you can pick out het pieds from random clutches, even if there was no pied in there in the first place. Normals have them, any morph can have them and not be related to the pied project at all. I've read stories about peoples possible het pieds with markers not proving out. If you bought him as a pastel, chance of him being het pied are really slim. IMO if he is a poss het, he might be worth proving out, if he isn't more than likely you're going to just be disappointed.