I am assuming you will need to cut the dots from fondant and paint them silver? I just roll my fondant thin then use a circle cutter the size I am needing. I then mix a silver dust with grain alcohol or lemon oil and paint the circles. Be sure to use a safe dust. Here are a few that I use:
Not sure how big your dots need to be but if they are smaller, you can use anything from a drinking straw to a bubble straw. Another option if you would prefer to have cutters, would be this mini accent set. It has many shapes but I have found them to be very useful for accents.
http://autumncarpenter.com/product/mini-accent-cutter-set/81/
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