Only way I know of to get rid of it is to remake the view from scratch, copypasting each cel.
It's an option in the main menu bar:
View -> Remove embedded palette.
My "?" was because at first I assumed your 995 didn't have an embedded palette, since it doesn't show up in the preview. I might have a bug there!
[edit:] oh, it was because you marked all the colors "unused"
I'll convert them if nobody else will. What Kawa said is one example of SQ5's palette not being ideal; its greys are actually shaded blue a little bit which means it's impossible to get a true gray. The classic KQ5 palette, as I said, has a wider variety of colours that represent more than what SQ5's slanted palette does.
Ok, but let's wait until the resources are a little more stable. If kawa gets a few more views to me today, I can release the latest version of the template game later today. Just let everyone know when you're going to do it, so we know it's coming.