share/extensions/color_desaturate.py

   1 #!/usr/bin/env python
   2 import coloreffect
   3
   4 class C(coloreffect.ColorEffect):
   5   def colmod(self,r,g,b):
   6     l = (max(r,g,b)+min(r,g,b))/2
   7     ig=int(round(l))
   8     return '%02x%02x%02x' % (ig,ig,ig)
   9
  10 c = C()
  11 c.affect()