Change renderer colors

Discussion created by DMS2 on Jan 18, 2012
Latest reply on Aug 13, 2012 by Neil
I must change the symbology of a bunch of layers in an mxd programatically. I have point, line and polygon layers using unique value renderers and class break renderers. The only change needed is the color of the symbol of each unique value/class based on an algorithm, so I've been doing some research to see whether it is likely to make changes to a created renderer without having to extract all its propierties to create it again. So far I don't have much hope about it
Anyway any idea will be really welcome.
Thanks in advance.