Fancy Shutdown

print("Goodbye.")
sleep(0.5)
local pixels = {}
local x,y = term.getSize()

term.setBackgroundColour( colors.white )
while true do
	for i=1,50 do
		local curX = math.random(x)
		local curY = math.random(y)
		local maxPixels = x*y
		if #pixels < maxPixels then
			term.setCursorPos( curX, curY )
			write(" ")
			pixels[x.. "/" ..y] = true
		else
			os.shutdown()
		end
	end
	sleep(0)
end