Test
using Makie contour(rand(33, 30) .* 6 .- 3, levels=[-2.5, 0.4, 0.5, 0.6, 2.5], colormap=[(:black, 0.2), :red, :blue, :green, (:black, 0.2)], colorrange=(0.2, 0.8))
using Makie contour(rand(33, 30) .* 6 .- 3, levels=[-2.5, 0.4, 0.5, 0.6, 2.5], colormap=[(:black, 0.2), :red, :blue, :green, (:black, 0.2)], colorrange=(0.2, 0.8))