I've got a length of wool which is a pleasant medium-blue, but a bit...richer...than i would exactly like. Has anyone got any good ways of taking the edge off of the color and dulling it? I'm not in any great rush, and can let it sit around for a few months if that is better.

As I see it, my options are:
1. letting it fade with time (which has worked well with some linen, in just 2 years it was a shadow of the former color, but i dont think wool is quite as eager to give up the dye)
2. leaving it out in a covered screened porch, which gets misted in the rain but only indirect sun except for in one corner
3. leaving it out on the stair in front of the house, which is in full sun, but where there is not enough room to spread it fully, and where it can be accosted by passers-by
4. throwing it in the bathtub with a chemical bath of something like bleach.

Anyone have any advice on comparative methods, or chemicals to try? I've got enough of the stuff to test stuff on some swatches.

You could try a commercial color remover - some people swear by that method.

Sun may or may not work depending on the dye and where you are in the country- I'm here in sunny southern CA and I can bleach some fabrics down to almost nothing in a week or less just because the sun is so brutal.

How about spreading the fabric out on the roof of your covered porch where it will get direct sun but be out of the line of fire from pedestrians? Even if it gets dirty you can always wash it.

Another option is overdying it with a beige or ecru dye to muddy the color a bit.