Libby has been using the walnut crystals on one of her quilts to age it, I had the info about it and this quilt, Kentucky Sun, but way back on my previous blogs and without the fabric so I thought I better bring it uptodate since she linked back to me. I bought my crystals in a powder form, I had orginially heard about it too on a punchneedle group that
used it to age their projects. With the crystals you can dissolve as much as you want for a darker, aged look. Plus you can dip your fabric pieces.
The picture of the fabric is not aged, and then this quilt was painted with the crystal solution. It is not permanent unless it's baked, the lady I bought it from uses it on antique dolls and paper, but be careful if you decide to bake it.