Pros : Beautiful results, regardless of the color produced.
Cons : Fired color can range from lime to blue-green to the coppery-gold shown. Not so good when you are trying to get gold and come up with lime green. Of 5 different sheets I've ordered, only 1 has been usable as copper/gold.
Other Thoughts : CBS applies the color within a tolerance range which clearly varies greatly in this product. Buy it in person if possible. If you have a good sample you can easily tell how far off it is before buying.