If you want to change the size, don't change the height.

• Wall loops: 1
• Infill: 100%
• Layer height: 0.120 mm
• First layer height: 0.200 mm

Total height: 0.99mm(8 physical layers)

Start with Color : ORANGE

1.Swap to BLACK

at layer 3 (~0.260 mm)

2. Swap to RED

at layer 4 (~0.380 mm)
 

3. Swap to WHITE or  BONE WHITE (I used bone white)

at layer 5 (~0.548 mm)