I'm sure my A1 is fine !
I printed it with 0.4 mm nozzle because I don't have a 0.2 mm one but I'm sure it would be very nice with a 0.2 mm.
The file is sliced for 5 colors:
I decided to not bother and print the white parts with the same filament as for the brown parts.
If you do want to try with 5 filaments, I suggest you set the printer to use the same filament for Blue and White.
As soon as the blue wall is printed, stop the print, and replace the blue filament with the white filament.
You can also use the white filament for the wall in the background.