The NERD Lemon line is just one line of Pastel from NERD. I am pretty sure they have a NERD line Pastel that is not a Lemon line.

Supposedly, the Lemon line is a bright yellow animal with dark black markings. This is in contrast to the flames or washed out look of the black on the Graziani Pastels.

If you breed a Lemon Pastel x normal, the resulting Pastels would be Lemon Pastels.

Too me, the only Pastel line worth paying a premium for is the Ruppel. Too me, the rest are just a line, no better or worse than any other line, and that includes the Lemon and Blonde line...it is just a name.

Dave