Prusament on Twitter: "See how PLA Mystic changes color when the light touches the model surface. The castle is printed from PLA Galaxy Black, while the roof and rock are from PLA
Raise3D Premium PLA Filament - ISO 9001 and ISO 14001 certified - ADDIFY Hong Kong 3D Printing
Jessie Premium PLA Filament | 3D Printing | Slice Engineering
Amazon.com: Vulkankraft Premium Solid Black PLA Filament for 3D Printing, 1.75mm, 1KG, Testing Pack Available, Less Prone to Warping, High Printability, Reduced Chance of Clogging. : Industrial & Scientific
Premium 3D Printer PLA Filament 1.75mm Wide Compatibility - LABISTS