Jack'O'Lantern 2: Slicing and dicing

In part 1, I designed a Jack-o-lantern in FreeCAD. Now is the time
to trick Prusaslicer into letting me print in 2 colors with only one
manual filament swap.
00:00;00 Intro
00:48;00 Slicer
03:34;00 Revise design
04:11;00 Slice again
04:45;00 Trick the slicer
05:53;00 Slicer Error
06:20;00 A Work-around
07:49;00 Try again
09:33;00 Z-Hop
10:05;00 One last issue, text editing G-code
11:46;00 Next time