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Is it possible to auto assign random vertex colors for every UV island... so it will be more visible in the 3d view? Like in 3d-coat

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It's a new Cycles only feature, but yes. In material nodes, try using Geometry>Random Per Island. Map and control the output via color ramps. enter image description here

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  • $\begingroup$ I think this might not actually be UV islands but mesh islands. $\endgroup$
    – Echoleta
    Apr 13, 2022 at 0:08
  • $\begingroup$ Oh snap, you're right. Now that geo nodes and more have been updated, it should be possible to have actual UV islands with random colors. I'll have to look into it. $\endgroup$ Dec 8, 2023 at 3:32

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