Op-Art Beverage Coaster Puzzle

A large coaster that can also be used as four small coasters.
For a two-color result, the filament must be changed during printing.

The base plate has a height of 2mm, then followed by the decoration with a height of 0.5mm.
With a layer thickness of 0.25mm, the filament change must take place immediately before layer 9.
I have modified the GCode in the corresponding line and inserted the following commands there.

;LAYER:8G0 X50.3 Y74.044 Z2.25    ; first command for layer 9G0 F3150 X50 Y10          ; move to filament change position@pause                    ; switch Repetier-Server to pause-modeM104 S210                 ; switch-on hotend after pauseG28                       ; home all axisG1 F150 Z2.25             ; first only lift verticallyG0 F1000 X50.3 Y74.044 Z2.25  ; move to first position in layer