I grew up with the gold version everywhere. I see now you can get them on ebay but they are considered 'vintage' and command very high prices ($100 plus). It probably is easier to keep things as is or for about $5 you can get a rattle can of any kind of gold or silver paint, flat finish, metallic, hammered finish, sparkly, etc and make it any color you want. Or, perhaps just as easy to get a little throw away foam brush and take the left over wall paint and paint the thermostat the wall color and it will pretty much fade out of sight.
You might also consider a simple programmable digital thermostat too to save on energy when you don't need tight control of temperatures.
