Melodramatic, corsetted mistress of the obscure

My dear fabric mavens:


What are my chances of bleachingfading fabric that is (if memory serves) 60% polyester/40% rayon?


The weight is right, the drape is right. The color is WAY too dark (darn it all).

Aw, man! Clouds rolled in. I am pretty sure the moon is rather hard to see in general right now, but I can't find it at all. Boo.