Melody
I used one of online file converters for translate jpg into dxf file, then in SolidEdge I have made different height extrusions for different colour layers.
I use Artillery Hornet - the filament change is manual. I have used Prusa Slicer to add colour change and my printer stops at the colour change.
Base thickness is 2mm = 10 layers
every colour is 0,6mm = 3 layers