These paints are called Polished Pigments, I bought them on the Quilting Arts shop website. I first saw these being used by mixed media artist Bernie Berlin at IQF Chicago in Open Studios. This is an interesting product, you buy small containers of metallic powder and a clear paint medium to mix it with. You can buy the Simple Solutions liquid that you mix with the powders for paper or fabric. These make a paint that is so bright and saturated it almost resembles car paint. This is what the website says about them:
Polished Pigments™ are brilliant ground pigments mixed with shimmering micas. Mix with one part Polished Pigments™ to 2 parts Simple Solutions™ to make your own shimmering acrylic paints. Create a soft sheer look by adding more Simple Solution™.
The colors are gorgeous, they have a very different consistency than other textile paints though. I don’t think they would be good for painting illustrated type work, but they are great for creating luminous surface techniques and mixed media.