Denim seems to age quite nicely on its own...
I don't suppose you remember this skirt (http://hearth-tobelovely.blogspot.com/2012/08/wardrobe-basic-denim.html)? I love this skirt inordinately, I wear it probably twice a week. Here it is tonight on my ironing board.
You'll see that in less than a year of wear, it's faded into a perfect shade of old-jeans. The seams have popped nicely, and it's got that coveted worn-denim feel.
I suppose I could have gotten the sandpaper and bleach out - but this is more fun.
Maybe I should make another one? -laughs-