-- Converts HEXRGB to RGB
function hexrgb(hashtag)
  hashtag = string.lower(hashtag)
  local r1 = hex_to_dec(hashtag:sub(2,2))
  local r2 = hex_to_dec(hashtag:sub(3,3))
  local g1 = hex_to_dec(hashtag:sub(4,4))
  local g2 = hex_to_dec(hashtag:sub(5,5))
  local b1 = hex_to_dec(hashtag:sub(6,6))
  local b2 = hex_to_dec(hashtag:sub(7,7))

  return (r1*16 + r2)/255, (g1*16 + g2)/255, (b1*16 + b2)/255
end  

function hex_to_dec(hex)
  if hex == "0"      then return 0
  elseif hex == "1"  then return 1
  elseif hex == "2"  then return 2
  elseif hex == "3"  then return 3 
  elseif hex == "4"  then return 4
  elseif hex == "5"  then return 5 
  elseif hex == "6"  then return 6
  elseif hex == "7"  then return 7
  elseif hex == "8"  then return 8
  elseif hex == "9"  then return 9
  elseif hex == "a"  then return 10
  elseif hex == "b"  then return 11
  elseif hex == "c"  then return 12
  elseif hex == "d"  then return 13
  elseif hex == "e"  then return 14
  elseif hex == "f"  then return 15
  end
end