Don't bother with Touchplate.com. They claim that their switchplates are compatible with the GE switches, but they are NOT, so don't waste your money.
I found someone on eBay who CNC cuts replacement switch plates for the GE low-voltage switches. His name is Tom Farmer, and he owns Upstate CNC in NY. If you go on eBay and search for "Rare GE Low Voltage", you'll find that he sells 1-gang, 2-gang, and 3-gang plates, and if you contact him, he can make them from 40 different types of wood to match your home. I bought one just to try it, and it fits perfectly and looks great too. The image shows his replacement switch plate next to an actual GE low-voltage switch plate.
If you are like me, you have found that finding true GE switchplates is virtually impossible. I think that these are the next best thing.