How to change color of the land area?

Q&A GMT.jl Q&A
3

Many thanks, Joaquim!

So I would need something like the below?

cpt0 = makecpt(color=“250/240/230”);

grdimage!(Land_clip, color=cpt0, nan_alpha=true, shade=false,
xaxis=(annot=15, grid=30, FONT_ANNOT_PRIMARY=“12p,Helvetica,black”,),
yaxis=(annot=15, grid=15, FONT_ANNOT_PRIMARY=“12p,Helvetica,black”,),
par=(MAP_GRID_PEN_PRIMARY=“0.005p”,), coast=true);

It does not work for me. Is range=(0,10), a mandatory argument? I just need the land color to be a uniform color. What is the range? elevation?