Alex,
I believe this was answered, but let me give a bit more detail.  At the end, I 
will answer.

A rainbow color map is considered to be a RBCM (Real Bad Color Map).  It's 
actually getting a lot of negative attention in the journals and conferences.  
There are at least two reasons it's bad.  First is that about 8% of men are 
color blind, and the vast majority cannot tell the difference between green and 
red.  Thus, this color table is horrible for 8% of male engineers and 
scientists.  Second, the normal rainbow colormap does not change color equally 
to the human eye.  In other words, in the green part of the color table, 
everything looks the same.   Look at the size of the yellow bands vs the green 
band.  It's ridiculously different.  The default color map is very good with 
regards to these two issues.

ParaView comes with many optional color maps.  Unless there is an overriding 
reason, choose any of them except the Rainbow color map.  You do this through 
the Edit Color Map (a few icons below the Edit menu), then Preset (icon on the 
right, looks like a read heart).   My favorite is probably black body, although 
it only works with some simulations.  If you are looking for a color map that 
is more shiny (i.e., colorful), try rainbow desaturated.  But, realize that 
color blind folks will have issues with it.

Alan

-----Original Message-----
From: ParaView [mailto:[email protected]] On Behalf Of Alex Lindsay
Sent: Monday, April 25, 2016 11:34 AM
To: ParaView <[email protected]>
Subject: [EXTERNAL] [Paraview] Change default color mapping

Is there a way to change the default color mapping? The default is cool to 
warm, but I prefer blue to red rainbow. I saw in the manual directions for 
customizing properties, sources, filter, etc, but I think I need a little more 
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