I have upgraded to Karmic 9.10 and noticed that my icons for blend file type is blank. That is for the Blender 3d modeling program. How do I reassign the icon for this type.

so far I tried

Code:
sudo gedit /etc/mime.types
then added

Code:
model/blend                blend
and saved

to set up a new mime.type for blend

and put a model-blend.svg in the /usr/share/icons/gnome/scalable/mimetypes folder. didn't work.

any ideas?