🚀 go-pugleaf

I have a startupscreen that I want to use as my desktop picture on a
Mac II with a large (1024 x 768) color screen.  I have Paul Mercer's
Color Desk, but I have no way of converting my startupscreen file,
which I created with Pixel Paint and which fills my large screen
display nicely, to a file suitable to Color Desk that will also fill
up the screen.  The "stretch picture" option of Color Desk isn't really
a help because it distorts the picture too much.  Thanks in advance
for any help.