I have two Jumbo eyeshadow pencils, dark brown and very black. They are great eyeshadow bases, I can easily build color and the staying power is awesome. I'm looking to purchase more as they are very inexpensive.
i own the matte white one (called milk) and i use it all the time as an e/s base! they really make bright colors pop. and the price is a great deal too.
i got a few of these two and I love them. I have Rust, Baby Blue, Purple, Horse Radish and Pots and Pans. They are great for making colours pop though if I have to wear them for more than 5t hourse, I need to put another base underneath.