I use a PowerSpec 3D Pro dual extrusion printer and a Solidoodle 2 with an all-metal hot-end.

I currently have the following colors in ABS:

Black
White
Yellow/Green
Pink
Green
Red
Blue

These are the colors I have in PETG (translucent):
Magenta
Yellow
Blue
Clear

I also offer an acetone vapor bath for ABS that strengthens parts and gives them a smooth, glossy finish.