How to change the fill of one of the graphs in Maxima?

Question

linux

There is a chart like this:

wxplot3d (,
   5*sin((x+y)/3), [x, -5, 5], [y, -5, 5]],
   [x, -5, 5], [y, -5, 5])$

And it looks like this:

Can you please tell me how to change the fill color of one of the graphs? For one graph (not an intersection), this is done, as I understand it, using the palette option:

plot3d (log (x^2*y^2), [x, -2, 2], [y, -2, 2],[grid, 29, 29],
       [palette, [gradient, red, orange, yellow, green]],
       color_bar, [xtics, 1], [ytics, 1], [ztics, 4],
       [color_bar_tics, 4])$