I have a wedding in August that I am making cookies for. I make an old time boiled icing to frost them with. The bride has asked the colors to be white, brown and silver. Obviously the white won't be a problem, but any suggestions on the brown and silver? I live in a small town in northern Wisconsin, and I don't have any craft stores close by that I might be able to get things at. My only option would be a Walmart, or possibly ordering something on line. Thanks so much! 
AThe Walmart near me sells Wilton's colors. Brown is definitely one of the colors. Silver, not sure what you are doing with the color but you could use luster dust after you make the frosting. You could even make it a pale grey and then add the luster dust on top. My Walmart sells the dust as well. If yours doesn't (they really should), then try online. You can get Americolor online. No store near me sells it.
AThere are a lot of silver food color spray in ebay... You should use it...
For brown a lot of the time I use coco powder if I'm making black I start with coco powder and then add the black after its dark enough,
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