I would be curious to hear any suggestions
Thanks
Kerri
Luvbug creations
You can purchase silver luster dust. I mix it with some rum or vodka or something and paint it on. Wilton has their version at AC Moore and Michael's for roughly $4.
I recently did hannah montana cupcakes for my daughter. I made miniature microphones out of fondant for the top. The fondant was white so I brushed each one with the silver luster dust. it worked great!!! I would definately use this. Actually.. I am doing a princess cake for my daughter's 4th birthday in a couple months. I plan on doing a tiara and that is how I will make it sparkle. luster dust. It's great!
You might get a nice silver colour with the luster dust just by brushing it on dry. I have a blush brush that I bought just for cake use. I have brushed dusts on fondant before dry, and you get a nice colour. If you want something heavier, the vodka/dust mixture is the way to go. Take care not to make the paint brush too wet though as the royal icing may break down.
You don't have to use vodka - you can use vanilla extract (I find vodka works better, but any clear alcohol will do) - but as Loucinda says, do NOT use water.
Thank You all for your advice and tips. I used wilton pearl dust in silver with clear vanilla exract and the color came out great. I let it dry overnight and went to carefully peel the wax paper off the back and, you guessed it, my tiara is now in about ten pieces 
I am going to try again, any tips on why it stuck or how to remove it better?
After breaking several of the royal and white chocolate ones, I now make them only from gumpaste. Here is one I made a couple of weeks ago:
You can buy already made gumpaste, or you make your own, I like to make my own. You make the individual ropes and then use gumglue (a tiny bit of gumpaste dissolved in water) to glue all the pieces together. I then add the bottom piece on last to cover all the little bits at the bottom.
As far as the form, it is the same thing, I use a piece of wax paper over my template - which is taped to an oatmeal canister!
Let it dry and then paint it.
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