Start with Black
At layer #5 (0.64mm) swap to Sapphire Blue
At layer #8 (0.88mm) swap to red
At layer #15 (1.44mm) swap to White for the rest.
1 Black,purple,sky blue,white
2 Black,Sapphire Blue,sky blue,white
3 Black,red,orange,white
4 Black, Sapphire Blue,red,white