How do I color the plotting plan above/under a line in different colors?

Say that I have defined a line:

using Plots
x_vals = 1:10
y_vals = sqrt.(x_vals)
plot(x_vals, y_vals)

Is there a way that I can color the plot plane, so that the area below the line have one color and the are below have another one?

The solution is to use the fillrange kwarg to plot.