You think All pastels are the same?????? I think not!
Yes, they may all be compatable, meaning breeding different lines together will produce supers if crossed, but they are far from being all the same as far as looks and color.
I know first hand from seeing all the lines of pastels in Don Kaye's collection. He has Blondes,Lemons,Graziani,Bell,and regular Nerd line pastels and if you were to put one of the adult breeders from each line side by side, you would CLEARLY see that not ALL pastels are the same!
If you are looking for color then the blondes and the lemons are it. They have a brighter yellow color that actually stay's better than other lines, into adulthood. Graziani's line usually has some nicer blushing, but other lines can have it too.
If you plan on breeding pastels into other morphs someday then the line of pastel you choose becomes very important. For instance, I have seen adult bumblebees that look just like a spider because the line of pastel that was used really browned out as it grew. On the otherhand I have seen adult bumblebees that were produced from a lemon pastel that were still bright yellow as adults.
Me personally, I would rather spend more money on a morph that is going to stay nicer looking AND produce better looking offspring than having spent good money on a morph that is only going to produce average or below average offspring and become a lousy example of that morph as an adult.
The choice is yours; do your homework, but hopefully you'll see that Quality is key!