like the simple nozzle size indicator

Without MMU:

Import in PrusaSlicer and split to objects

Hide the indicator part

Slice the text first without any loops or brim and set the Elephant foot compensation to 0

Export G-code for the text

Unhide the indicator and hide the rest of the model

now slice the indicator with standart 0.2 print settings

Export the second g-code

print the text first 

dont forget to remove the purgeline 

change filament color and print the second part 

done;-)