I wouldn't I would just buy some good quality powder an try that first. You can get 3 1/3rd. lb samples of powder for Smoke over at CastBoolits for $19 shipped. I recommend the Yellow Green, Carolina or Signal Blue or Red and the Clear coat as well.
http://castboolits.gunloads.com/show...raying-bullets
If you want to go elsewhere Eastwood Powders
http://www.eastwood.com/hotcoat-powd...g/powders.html are excellent as well you can buy it in 8 oz. bottles for under $10 sometime as low as $7, either way, a little bit goes a long way. Colors that work well are Orange/Vermillion, Medium Green.Lime Green an Maroon.