This article was prepared with AI assistance based on an analysis of the current Lumina Studio source code, existing Wiki content, and relevant workflows. It has been checked against the current version, but omissions or details that become outdated may remain as the software evolves. If you find an error or have a clearer explanation, example, or suggestion, please leave a comment on this page or propose an edit on GitHub.
Selection Modes, Palette, and Free Colours
The palette contains only colours present in the active preview. The percentage below each swatch is pixel coverage for that matched colour. After selection, the header shows the quantized colour, matched colour, and replacement in order.
Four selection modes
| Mode | Target after clicking the 2D preview | Typical use |
|---|---|---|
| Same color | Toggle every region with the clicked color | Change a color across the image |
| Similar colors | Toggle visible regions within the color-difference tolerance | Change nearby shades together |
| Pick blocks | Select or deselect individual regions | Change one or several isolated shapes |
| Selection brush | Select whole blocks touched by brush strokes | Select several blocks at once |
These tools use a shared selection. Current, Multi, and Region are older entry-point names. Use the tools above in the new interface and check the visible selection boundary to confirm the actual edit area.
Similar-color tolerance defaults to 6 and runs from 0 to 30. At 0, only identical colors are selected. Brush size runs from 2 to 160 px. See Quick recolor & similar recipes for selection and target-color details.
Replace, undo, and clear
Choosing a target colour creates a source-to-target confirmation first. Only Confirm Replace rebuilds the preview. Multiple colours or regions are sent as one batch so the 3D result is not rebuilt once per item.
- Undo returns to the available previous editing state; check both colors and selection afterward.
- Clear Remaps clears global and regional replacements and rebuilds 2D/3D output from the original matched result.
- Cancel discards only the target colour that has not yet been confirmed.
Free Colour
Mark as Free Colour extracts every solid voxel of the selected matched colour into a standalone generated object named
like Free_FFFFFF. This lets the slicer assign or process that object independently. It does not invent or automatically
select a real filament.
Free Colour changes the structure of the generated 3MF, so Generate must be run again after marking or clearing it. It does not recolour the current 2D preview.
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