Idea for a Space Empires IV T-shirt

[PvK]

That's a good design. You could request permission to do what you'd want to do with it from whomever cares. They probably don't unless you're planning on making money with it, in which case I imagine at most they'd want a cut, but it's really silly for anyone to worry and not worth their trouble I'd think. Basically it's fan art. Especially if you ask and they say go ahead.