This year I tried using the GitHub open-source project LuminaLayers（https://github.com/lumina-layer-studio/Lumina-Layers） to make some flat multi-colored prints. You can layer more colors using limited materials, because I found Hueforge really hard to use and get into.
The advantage is that Lumina can be used to make flat surfaces or reliefs, but it requires a mandatory multi-color color changing system (such as AMS) because each layer needs to be changed several times, for a total of five layers
