If you wanted the mouse to be something else you could use a sprite like this. (Already mentioned, but here's a code snippet)
rem setup demo
sync on
sync rate 60
hide mouse
color backdrop 0
rem Make an image of a green box for our mouse.
create bitmap 1,10,10
ink rgb(0,255,0),0
for l = 1 to 10
line 0,l,10,l
next l
get image 1,0,0,10,10
delete bitmap 1
rem Make an image of a red box for an alternate mouse
create bitmap 1,10,10
ink rgb(255,0,0),0
for l = 1 to 10
line 0,l,10,l
next l
get image 2,0,0,10,10
delete bitmap 1
rem Begin loop
do
rem If you click, then use the red box image. If not, then use the green box image.
if mouseclick() then image=2 else image =1
rem Draw the sprite (There's probably a better way to make the sprite than drawing it every loop)
sprite 1,mousex(),mousey(),Image
rem Refresh screen
sync
rem End loop
loop
