The editor's you mentioned are used for a reason... honestly and don't take it personally...the graphics there are of terrible quality and you won't create a whole design out of it anyway. (now I saw "© 1997", that explains it...) I appreciate you wanted to share what you find interesting, don't get me wrong
You may not want to have visually rich game, but then you can make it nice even with CSS, make it subtle and more text-based then.
This is how looks a game with the best game(mechanics)design I've seen so far and I like the most:
http://upload.wikimedia.org/wikipedia/commons/1/19/Meliorannis.PNGAlmost no graphics, very subtle yet relatively nice (considering it's text-only) ... I think it's better than have graphics there at all cost, even if you don't know how to do them and use some poor quality pre-made ones
edit: replaced link (design is flexible, that's why the width)
edit: I don't say visually rich website's are not good either, I actually like them more, but then one have to accept that they're more difficult to create