Refinement on TextMate's Insert Color command

#!/usr/bin/env arch -i386 ruby

# TextMate's default insert color command is pretty lame. I wanted it to detect
# rgb values and use those, outputting the same if detected. Here's my first naive
# cut at improving this script. I think it should fall through a few different
# filters, trying to detect whether it's hex, rgb, or a color name (who uses those?!)

require ENV['TM_SUPPORT_PATH'] + "/lib/ui"
require ENV['TM_SUPPORT_PATH'] + "/lib/exit_codes"
colour = STDIN.read

was_hex = true

if colour.length > 0 and colour[0] != ?#
  was_hex = false
  if md = colour.match(/(\d+)\s*,\s*(\d+)\s*,\s*(\d+)/) and md.length == 4
    colour = '#' + md[1,3].map { |c| "%0.2X" % c }.join("")
  end
end

if res = TextMate::UI.request_color(colour)
  if was_hex == false
    print [res.delete("#")].pack("H*").unpack("C*").join(", ")
  else
    print res
  end
else
  TextMate.exit_discard
end