lines with colormap and colorbars around

using CairoMakie, ColorSchemes

x = range(0, 2π, 50)
fig = Figure(size = (800, 600), fontsize = 22)
ax = Axis(fig, xlabel = L"x", ylabel = L"y")
line1 = lines!(x, sin.(x), color = x, colormap = :thermal, linewidth = 4)
line2 = lines!(x, cos.(x), color = sqrt.(x), colormap = :ice, linewidth = 4)
line3 = lines!(x, -sin.(x), color = x .^ 2, colormap = :viridis, linewidth = 4)
line4 = lines!(x, -cos.(x), color = x / 2, colormap = :plasma, linewidth = 4)
labels = [L"x", L"\sqrt{x}", L"x^{2}", L"x/2"]
cbar1 = Colorbar(fig, line1, label = labels[1], width = 10, ticksize = 5)
cbar2 = Colorbar(fig, line2, label = labels[2], flipaxis = false,
    height = Relative(3.5 / 4), width = 10, ticksize = 10)
cbar3 = Colorbar(fig, line3, label = labels[3], vertical = false, ticksize = 10,
    tickalign = 0, flipaxis = false, width = Relative(4 / 4), height = 10,
    tickcolor = :red)
cbar4 = Colorbar(fig, line4, label = labels[4], vertical = false,
    width = Relative(3 / 4), height = 10, ticksize = 10, tickalign = 1)
fig[1, 2] = cbar4
fig[2, 1] = cbar2
fig[2, 2] = ax
fig[2, 3] = cbar1
fig[3, 2] = cbar3
colgap!(fig.layout, 5)
rowgap!(fig.layout, 5)
fig