If you want Light-Weight Muteki Lugnuts, you can get them through Evasive motorsports. I bought my Muteki Black Lugnuts through Evasive and received them in two days, maybe because they're right down the street from me pretty much. Evasive is a good company to buy from, you can trust them (Good People).
The Muteki only come in Black or Anodized Blue. These Muteki lugs weigh 36grams compaired to stock, which are 60grams of weight. It takes 454grams to make a 1 pound, so you will only be eliminating a little over a pound of weight for all 20 lugs put together. You will not notice a major difference, but they will look good. The Muteki are like $15 dollers more then Gorilla lugs. The Gorilla lugs are the same quality of material, but are 60grams instead of 36grams, so it's your choice.