I am trying to get a hold on Plots.jl capability to plot meshes. The `mesh3d`

seems to be the good choice for that.

With the following example, I manage to plot a uniformly colored mesh with the `plotlyjs`

backed.

```
using Plots;
plotlyjs();
u1 = LinRange(0, 2 * pi, 100) .* ones(100)'
v1 = (LinRange(0, 2 * pi, 100) .* ones(100)')'
u2 = sin.(u1) .* sin.(v1)
nl, nc = size(u1)
mesh3d(vec(u1), vec(v1), vec(u2))
```

However, the `vertexcolor`

parameter that should be used to pass a color to each point seems not to work as `mesh3d(vec(u1), vec(v1), vec(u2), c = :red)`

expectedly returns a red mesh, but `mesh3d(vec(u1), vec(v1), vec(u2), c = :red, vertexcolor = vec(u2))`

too.

An attempt to provide a 3-column matrix of numbers in (0-255) failed as well `mesh3d(vec(u1), vec(v1), vec(u2), vertexcolor = rand(size(u2,1),3)*255)`

Does somebody have a clued how this should be done ?

Note : I know I could plot the surface with `surface(LinRange(0, 2 * pi, 100), LinRange(0, 2 * pi, 100),u2)`

but it is not the point here because my end goal is to plot a surface with a non rectangular grid, which does not work with `surface`

.