Seashore Sunrise by Joel Kahn (June 2010 - modified 2013-02 for version 0.9.9.45 and later)
# Contributed by Joel Kahn
fastgraphics
cls
clg
c=7
xs=750
ys=520
graphsize xs,ys
for y=ys to 0 step -1
for x=0 to xs
c=c*1.00005
color rgb(c\256\256%256, c\256%256, c%256)
plot x,y
next x
refresh
next y
print c