This is made up of two layers of 1/8" acrylic. The top layer is white acrylic and was painted with Krylon Charcoal Gray Hammered Finish Rust Protector. The bottom layer is black acrylic and was painted with Krylon Dual Mandarin Orange. The clock movement is a smooth sweep movement and came from Klockit.
The black star shapes and the base are the color of the black acrylic and were kept from being painted by cutting those shapes out of the protective covering. The pictures show what I mean a little better.