Hi. I’m trying to change the line color in a graph I’m generating using Gadfly (in a Jupyter notebook).

```
p = plot(Coord.cartesian(xmin=-2, xmax=2, ymin=-2, ymax=2))
for i in 1:50
push!(p, layer(x=d.A, y=prior_dists.α[i] .+ prior_dists.βA[i] * (d.A .- mean(d.A)), Geom.line, color=[colorant"black"]))
end
display(p)
```

The above code generates the output

```
Plot(...)
```

If I leave out the geom, the graph defaults to points and I get black points (likewise if I specify `Geom.point`

). If I leave out color, I get lines, but in Gadfly’s default color.

Am I doing something wrong?

Thanks.