Hey Brian,
If you surround the whole thing in three ` marks, its the tilde key, left of the one button(one set of three on each end) marks then it will format it as code and display correctly.
Awesome adaptation! Iām loving the updates 
PS: if you are after some explanation behind the code on the PIO it was discussed in this topic here: WS2812 & pico - #22 by Dave161462