The cool tones include brown, champagne, green, peach, black, white and grey studs. I bought them on a deal and I was pleasantly surprised by this set. All the colors are lovely, better than expected. The shape is very nice and round and they look great on. The posts seem well set. I hope after wearing them for a while I can say the same, otherwise I'll update my review. I've been called the pearl stud queen because I wear a lot and now I'm really happy to have more colors to choose from.
At full price they're worth it if you really like pearl studs or if you have other things to combine them with like necklaces of different pearl colors. If I hadn't seen the deal I probably wouldn't have considered them, but they're really pretty and if you like pearls less than 10 bucks per stud is worth it.