The model can test your stringing and oozing behavior quite efficient up to 5 colors.
The 3mf file has already sliced the 5 colors for you.
It's sliced in the Alpha 2.7 Slicer version with Inputshaper, be aware about that.
It's at the same time a great test for your tool changes, 438 changes in total.
Use the STL data for other amount of colors.
The author marked this model as their own original creation.