As requested by Scott on the IRC channel, I made a Aircraft Carrier unit.
Screenshot :

And the full image with all 16 frames (width: 217 px) :

The model is finished but I don't know how to export this large PNG file to SHP.
Of course I have tried with OpenRA.Utility.exe but I have got many problems with palette files.
I was able to create the .PAL file of this image (and even the .ACT file for Photoshop) but I don't know how to keep good colors once converted to SHP.
When I convert it to SHP (with the RA palette), the colors are ugly. They don't respect the original image (see the screenshot above).
If someone can help creating this SHP file (with some nice colours) I would really appreciate.
Thanks
bye