Polylactic acid (PLA) is popular in 3D printing as it cools and sets quickly. Unlike ABS plastic, it is biodegradable and therefore better for the environment. It can be used to build support structures for other printouts, as it can then be dissolved leaving no marks.
Similar to regular 2D printers, this type of 3D printer mixes different colors between cartridges. This process allows the printer to reproduce the color spectrum, therefore allowing you to print in almost any color.
The printer is able to print in High Impact Polystyrene (HIPS). HIPS is similar to ABS plastic, but uses different solvents (limonene rather than acetone). HIPS is easy to paint and glue.
The printer prints in ABS (acrylonitrile butadiene styrene). This is up to 30 times stronger than regular plastic and is commonly used in 3D printing.
Polyvinyl Acetate is another form of plastic used in 3d printing similar to ABS. It can be used to build support structures for other prints, as it can then be dissolved leaving no marks.