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They have some crazy-awesome colors available, like Falling Star (blue with copper glitter) and Myrza's Meadow (pale lime green with fine holographic glitter). Google "Barielle swatches" to find lots of other ones. I strongly suggest googling anything you see on their website that intrigues you, because their own computer-generated illustrations of the colors are sometimes really inaccurate.
Here's how you get them for $3.75 each: