I bought a set of these but have decided to go with something different. They are brand new in the packages still. I opened one package to take out a nut and see how light it was. Gorilla part # 44127BK, lightweight aluminum lug nuts, black in color. Standard 60 degree taper, closed end with a 3/4" or 19mm hex. Should work with mostly all OEM and aftermarket Subaru wheels. These are similar to the Rays nuts but at a much less expensive price point. There is 4 per pack, I am selling 5 packs so it's a full set of 20. These retail for $25 per 4 pack, but I got a pretty good deal on them so I'll pass it on.
SOLD
Link to Gorilla webpage:
http://www.gorilla-auto.com/aluminum-lug-nuts
Some stock photos from Google: