get("#348") -- rgb functions
get("#175") -- tableToString
get("#349") -- table functions

w, h = img.width, img.height

usenames = true
colnames = {
  ["000"]="black",
  ["001"]="blue",
  ["010"]="lime",
  ["011"]="aqua",
  ["100"]="red",
  ["101"]="fuchsia",
  ["110"]="yellow",
  ["111"]="white"
}

count = {}
for y = 0, h-1 do
  for x = 0, w-1 do
    pix = img.getInt(x, y)
    r, g, b = rgb(pix)
    bucket = math.floor(r/128)..math.floor(g/128)..math.floor(b/128)
    count[bucket] = (count[bucket] or 0)+1
  end
end

colors = keystolist(count)

table.sort(colors, function(a, b) return count[a] > count[b] end)

r = {}
for _, col in ipairs(colors) do
  c = count[col]
  percent = math.floor(c/(w*h)*100+0.5)
  if percent > 0 then
    table.insert(r, (usenames and colnames[col] or col).."="..percent.."%")
  end
end
return "Colors: "..table.concat(r, ", ")