Interested in experimenting with your own multi-color filament? [Turbo_SunShine] says to just print your own, and experiment away! Now, if you’re thinking that 3D printing some filament sounds ...
In Tinkercad he selects a round roof shape and a cylinder to help design the wings and takes his cue from Harry’s own plane ... and then print it with the software that comes with your 3D ...