Is there a reason for the 8 vertex colors layers in Blender? I’m working with dynamic makeup on a model and this limit ruins my workflow. 
Is it easily fixable? It would help me a lot!
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Sorry for necrobumping.
I want to second this concern. Currently to effciently transfer masking gradients made with Vertex Weights to Cycles one need to use Vertex Paint. Hard limit of 8 Vertex Paint layers blocks this workflow completly, as more complicated meshes require a lot of different masks.
Not anly Vertex Painting can be very slow with hi-poly meshes, there is a limit to how much data user can use in shading.
This tool has great potential as it don’t require unwrapping or using image canvases (like Texture Paint) - which have their own set of problems. That makes it perfect candidate for creating masks for shaders in large, or complicated models.
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Totally agreed,
vertex colors are extremely useful, having only 8 layers feels extremely limitating
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Please increase this value it is extremely blocking
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