For item 2,get some dual color filament. One side will print in one colour and the otherside in the other colour. You can also print your own dual colour filament if you can’t buy one with the colours you want.
For item 2,get some dual color filament. One side will print in one colour and the otherside in the other colour. You can also print your own dual colour filament if you can’t buy one with the colours you want.