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  1. --PALETTE Modify: Inverted RGB
  2. --by Richard Fhager
  3. --http://hem.fyristorg.com/dawnbringer/
  4.  
  5. -- Copyright 2010 Richard Fhager
  6. --
  7. -- This program is free software; you can redistribute it and/or
  8. -- modify it under the terms of the GNU General Public License
  9. -- as published by the Free Software Foundation; version 2
  10. -- of the License. See <http://www.gnu.org/licenses/>
  11.  
  12. -- This script was adopted from Evalion, a Javascript codecrafting/imageprocessing project
  13. -- http://goto.glocalnet.net/richard_fhager/evalion/evalion.html
  14.  
  15.  
  16.  
  17. for c = 0, 255, 1 do
  18.  
  19.   r,g,b = getcolor(c)
  20.  
  21.   r2 = (g+b)/2
  22.   g2 = (r+b)/2
  23.   b2 = (r+g)/2
  24.  
  25.   setcolor(c, r2,g2,b2)
  26.  
  27. end
  28.