I'm still learning a lot about this gene. I just stumbled across this video, looks like it not only reduces pattern but also brightens up the morph, especially when mixed with Pastel, at least for this line of Blade. The het clown may also have an influence there as well. It would be interesting to see what happens if you breed the pastel het clown to a super pastel, that would give all pastel but only half would be het clown, it would separate the blade from the het clown, would be interesting to see if the blade without the het clown still brightens up the pastel.

https://www.youtube.com/watch?v=081knHk4FR8