Looking excellent so far. The Log In and Register pages are somewhat unnecessary though--you could just as easily make a little log in/register widget that sits at the top of all the other pages. Other than that, no significant criticism, though I think a blue color scheme might suit Starfarer a bit better.
Again, if you need art assets, don't hesitate to hit me up. Having users load randomly selected high-rez images every time they go to a new page probably isn't the most efficient use of a server's bandwidth.