Matching 3D printing filaments to LEGO colours

Anecdotal evidence suggests that 3D printers were one of the most in-demand Christmas presents last year, and it's not surprising, given that entry-level machines such as the Bambu Lab A1 combo and Flashforge AD5X are capable of producing extremely high-quality multicolour prints and cost about the same as 10356 Star Trek: U.S.S. Enterprise NCC-1701-D. If you were lucky enough to receive one, or you bought one for your kids, it's likely that, given you're an AFOL reading this, you'll be...