Use 0.15 layers
Put in a pause at layer 4.25
And a Change filament at 8.15 for Blue
and a Change Filament at 8.60 for Black
I think using a .25 nozzle would give it some crisper lines
I used 0.4 nozzle for mine.
This is the magnet I use.
The author hasn't provided the model origin yet.