A "lemon" pastel is a regular pastel
Lemon only means that it's lineage comes from NERD. Some of the traits that he said that are known in his lines were neck stripe, speckling, and one other I thought he mentioned but it's slipping my mind. Never the less a pastel is a pastel is a pastel.
Truly the only thing that should matter in pastel owners is how well does their pastel hold it's color. My girl I currently have has the same colors as those and comes from no specific line and the girl that I sold was as yellow as a banana and she didn't have a line either. Both were at 1000+ grams.