I dyed the orange to match the Antarctic tartan for my son's tartan hose. It is quite easy. If you get a pair of natural wool hose and the ProWash Acid Dye Sampler from Prochemical.com (the bright orange in there is the right one)
Bottom of this page:
http://www.prochemical.com/catalog/wfkits.htm

Or just order the bright orange (about half the price and enough dye for 10 pr of hose!) and use vinegar as the acid.

Here's an older pic that shows off the orange pretty well (I did marl the orange with yellow as I didn't want to leave the yellow out of the hose.)

http://www.flickr.com/photos/snicker...io/2381103546/

Kathy