It's all about the re-dye to save jeans that may have a great fit, but are lacking in color and flair. Here's how I saved mine.
1 Bottle of Rit Dye in Black plus one washing machine.
Here's the trick with dye: unless you use 2-3 times the prescribed amount when it comes to a washing machine cycle, it won't come out the color you're anticipating. Even the smallest cycle uses a lot of water and dillutes the color concentration. If you dye in a microwave or stovetop, you can deepen the color using less water, but inevitably you'll end up with an uneven finish. The best way to anticipate what your color will look like is to split the difference roughly in half. If I wanted my jeans to be jet black, I would need to use 2-3 bottles of dye against the washing machine cycle. But if I wanted to get them dark blue I could use a single bottle of black. (Just like my dress yesterday, for which I used a midnight blue to get it to that lilac finish).
Thank goodness the fit was there. They just needed some depth.