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w = 256
h = 256
p = {}
bright = {0.33, 0.9, 0.12}
dark = {0.33, 0.5, 0.12}
current_color = bright
rev_color = 0

for y = 0, h-1 do
  if y % 32 == 0 then
    rev_color = 1
  end
  if y % 64 == 0 then
    rev_color = 0
  end
  for x = 0, w-1 do
    if x % 32 == 0 then
      if rev_color == 0 then
        current_color = dark
      end
      if rev_color == 1 then
        current_color = bright
      end
    end
    if x % 64 == 0 then
      if rev_color == 0 then
        current_color = bright
      end
      if rev_color == 1 then
        current_color = dark
      end
    end
    p[y*w+x+1] = current_color
  end
end