Code Sketch

clear()
setBackgroundH(orange, blue)
setFillColor(red)
forward(50)
right(90)
forward(50)
left(90)
forward(50)
right(90)
forward(50)
right(90)
forward(50)
left(90)
forward(50)
right(90)
forward(50)
right(90)
forward(50)
left(90)
forward(50)
right(90)
forward(50)
right(90)
forward(50)
left(90)
forward(50)