Comment 25 for bug 292504

Right. So it would be better to change the actual icons instead of using a thumbnailer script.

Here's some discussion about the same idea applied to ELF binaries:

http://brainstorm.ubuntu.com/idea/5744/
https://blueprints.launchpad.net/ubuntu/+spec/elficon
http://www.compholio.com/elficon/
https://bugs.launchpad.net/ubuntu/+bug/207141