While we're on the subject of noseart, may I ask what are the technical parameters?  I know it has to be a .bmp file, but what size should it be?  Also, if I wanted to make nose art that was round shaped for example, how would I set the background so the image wasn't just square with the round nose art inside the square?  Would I set the RGB background settings to 167? (I think that's it.)  so the square doesn't show on a plane or tank but only the round art.  In other words, so the square part disappears, leaving only the art.  I used to know this but have forgotten.  Can anyone help refresh my memory please?  Thank you. 
Les