Convert UIColor to HTML hex value

convertUIColor.py

import re
def uicolor2hex(s):
  """ Convert UIColor to HTML hex value.
  I thought invisionapp only supports this format but eventually found the switch in settings.
  Leaving it here in case someone needs it.
  uicolor2hex('UIColor(red:0.08, green:0.14, blue:0.24, alpha:1)') == '#14233dff'
  """
  m = re.match('UIColor\(red:(.*), green:(.*), blue:(.*), alpha:(.*)\)', s)
  r, g, b, a = m.groups()
  def hex_value(c):
    return '{:x}'.format(int(round(float(c) * 255))).zfill(2)
  return '#{}{}{}{}'.format(hex_value(r), hex_value(g), hex_value(b), hex_value(a))