You can make silver by using silver paste (Aircraft Spruce carries it). It's not metallic (in that it doesn't have flake or anything), but silver, like gold, is a metallic color; by nature metallic. So you can't really get non-metallic silver. You can get silver without flake or sparkles, but it will be at least somewhat metallic.
Matt:
This is what I meant by "silver is more of an effect than a color". By itself, silver is just a bluish gray, just as, by itself, gold is just a shade of yellow. What makes it
silver is that it reflects the ambient light: in a room with yellow light it reflects a bit yellow, outside it may reflect the clear blue sky, etc. Moreover, even if you can't make out the individual particles of metal, it sparkles -- and no gray is going to do that.
If you are looking for a base color like silver that still pops, you can look at various off whites or using gray with some silver paste in it to make it more silver like.
But it still won't really
be silver -- although maybe it'll be close enough.
It's the silver paste that can make pulling tape tricky. It helps if after you shoot the silver you lock it down a bit with a coat of very heavily thinned clear. But it only makes the problem better, it doesn't cure it.
One thing I've learned in over twenty years of doing engineering on electromechanical systems is that sometimes it doesn't matter whether you solve a given problem with circuitry, software, or mechanisms -- that problem is just going to make you bleed, and while there may be a few different ways of solving it, they'll all hurt. Often, you'll have one or two nasty ways to solve the problem, and a whole plethora of possible solutions that'll either hurt worse or won't solve the problem at all.
In those cases you just heave a big sigh and you pay your dues. It sounds like getting a good looking silver may be one of those cases.