Its a type of ball python morph, meaning, pastels carry a gene that makes their color and pattern different than a normal, wild type.
Here's a group shot of (from right to left starting with the ball in the center) a normal, pastel, albino, and a spider:
and here's another pastel:
And here's a pastel and a spider:
Here's a group shot of (from right to left starting with the ball in the center) a normal, pastel, albino, and a spider:
and here's another pastel:
And here's a pastel and a spider:
