by xqfa·Workflow
Images © xqfa. Used for product review; image policy.
Layer Vertex Colors earns its place in the blender_extensions library by treating vertex colors like material slots. Global color balls sync across objects, and Data Rebuild recovers slot data after joins, making it a focused single-purpose add-on for vertex color assignment work in Blender.
Layer Vertex Colors is a vertex color management add-on for Blender, built by xqfa. It provides a vertex color slot system similar to the way materials work, so each object carries its own list of color slots that you can add, remove and reorder. At the center is a color ball system: global color balls are shared across objects, and changing one syncs instantly to every face that references it.
You assign colors in edit mode by selecting faces and clicking Assign, with select and deselect support built in. Batch Setup can create slots and assign faces by material or by loose parts in a single click, and a preview toggle switches vertex color display in the viewport on and off. If you join objects, Data Rebuild recovers slot data from the mesh attributes.
The add-on stores its data as mesh corner attributes for the slot index, corner color and color ball hash. Its interface auto-switches between Chinese and English to follow Blender's interface language. Layer Vertex Colors is compatible with Blender 4.5 LTS and newer, and is released under the GNU General Public License v3.0 or later.
Layer Vertex Colors is best for blender artists who want to manage vertex colors through a material-like slot system, sharing colors across objects and assigning them to faces in edit mode.
Layer Vertex Colors is completely free to download and use.
Layer Vertex Colors lists compatibility with Blender 4.5 LTS and newer, so if you're on 4.5 or a later release it should run. The add-on is written entirely in Python and stores its data as mesh corner attributes, which keeps it tied to Blender's own data model. If you're running a version earlier than 4.5, check the developer's GitHub page before installing, since older releases fall outside the stated compatibility range.
Layer Vertex Colors installs the way most Blender add-ons do. You can drag and drop the downloaded file straight into Blender, or use Install from Disk to point Blender at the archive. Alternatively, place the LayerVertexColors folder into Blender's scripts/addons directory and enable Layer Vertex Colors in Preferences. Once enabled, the LVC panel appears in the 3D viewport sidebar, where you add color slots and assign faces.
Layer Vertex Colors keeps its controls in the LVC panel in the 3D viewport sidebar. Click the plus button to add a color slot, then enter edit mode, select faces and click Assign to apply the color. Clicking a color swatch edits its color ball, and every face referencing that ball updates automatically. Slots can be added, removed and reordered per object, and Batch Setup can create slots and assign faces by material or by loose parts in one click.
Layer Vertex Colors is listed as free here and is released under the GNU General Public License v3.0 or later. That license covers how you can use, modify and redistribute the add-on, so it's worth reviewing if you plan to build on the code, which is available on the developer's GitHub page. For current licensing details and any updates, check the developer's page directly before relying on it.
Layer Vertex Colors requests permission to read and write mesh attribute data, which is how it stores its vertex color slots. It writes three corner attributes: layer_vertex_slot for the slot index, layer_vertex_color for the corner color, and layer_vertex_hash for the associated color ball. Because the data lives in these attributes, the add-on can rebuild slot data from the mesh after you join objects, recovering the slot setup rather than losing it.
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