Black Beetle:

 shiny, like a beetle's back, iridescent, with blue and green undertones.

New Moss: Cheerful green tone with a semi-matte surface.  Works on both white and brown stoneware clay bodies.

Yellow Silk: a sugary matte surface with golden tone.

Green Iridescent:  Shiny surface with unusual undertones.  Good on white clay, better on dark.