tikz library "snakes" and "fadings" problem

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With the latest pgf/tikz package I always get these warnings:

Warning:/b/c0/c Your graphic driver pgfsys-dvips.def does not support fadings.

and

Warning:/b/c0/c Snakes have been superseded by decorations. Please use the 
decoration libraries instead of the snakes library on input line 14.


As it seems tikzlibrary snakes has been removed (probably should be replaced 
now by \usetikzlibrary{decorations.pathmorphing} ) and fading has some 
different behavior.
The result is that when I compile the code using latex (pdftex), I don't have 
faded background anymore (although I defined    bgColorOne and bgColorTwo).

Please, update baposter.cls to reflect the changes in pgf/tikz latest versions. 
Thanks.

Original issue reported on code.google.com by [email protected] on 13 Sep 2012 at 12:41