This is a printable logo I made for a super hero themed casual day at work.
Freakazoid! is definitely a super hero I can relate to. ;-)

The idea is to print the part up to 1.4mm, add a M600 "Change Filament" command in the gcode and from 1.6mm print with a yellow filament.
It came out pretty good. I used hot glue to stick it on a red t-shirt.