As I've gotten older, I've grown an appreciation for more color in my wardrobe. Don't get me wrong, though: I love black. Anyways, I've been coveting those damn pretty breeches that everyone has. I've haggled with some people on eBay, but haven't been able to find some for the price I liked. The hubs and I are planning a huge trip this fall, so I'm trying to be a grown up about monies.
And I have about forty-bajillion pairs of cheap breeches, so I figured: fuck it.
Here's your express warning: this worked really, really well for me. It might not work so well for you. I followed the instructions like a fiend. Follow the packaged instructions, if you decide to do this. Also, check the label on your breeches. Mine were all cotton and elastic, so I felt okay about this.
Okay, so first, some "color remover" and three pairs of khaki breeches (Tuffrider, Flex Rider {?}, and On Course):
You just toss that in the water and then add the breeches. It said to go as hot as possible, but I was afraid. So I went warm/warm. Hot would have probably had better results.

Mid-way through the thirty minutes, the Flex Riders turned this amazing mustard yellow color. I was very, very tempted to stop there.

Post-de-coloring. Not a huge difference.
Then I filled this six-gallon bucket half-way with hot, hot water and toted it outside, Four times.

Ripping your nail off when the handle breaks is optional.
I used the yellow below, a purple and aquamarine.

The purple was the ultimate winner. Super quick color change, but it was also the darkest, which probably has a lot to do with it.

A previously unmentioned pair of ancient white Devon Aires went into the yellow bucket.

So I have aquamarine in the red bucket, purple in the purple bucket, yellow in the white bucket, and I tried to make teal but between the mustard color of the breeches and my over-application of yellow dye, I made bright green.

And the finished product, post washing!
Yellow Devon Aires. Green Flex Riders. Tuffriders trying very hard to be in the blue family, and the amazing purple On Course.
I think this is the result of poor mixing. Or something. No idea, but it should be hidden by boots.
Not a perfect dye job. Don't care.
And I love that the "leather"? took the color better than the cotton.
Poor TuffRiders. Only fabric tag succeeded in turning blue.