You can use the standard Plots.jl keywords, e.g.,
plot(x, f.(x), color=:gray)
or
plot(x, f.(x), fillcolor=:gray)
if you only want the shading to change color.
You can use the standard Plots.jl keywords, e.g.,
plot(x, f.(x), color=:gray)
or
plot(x, f.(x), fillcolor=:gray)
if you only want the shading to change color.