You can try out my theme if you like it. It is called the Luna Theme and is a dark theme with splatters of blue and surrounded my moons. Click HERE to check it out. Screenshots and the download is right on that website.
Plus when you load up Sapphire in ROM Manager there are several themes available there as well.
Or are you saying you've tried these and don't consider them "good"?
My favorite theme of all time is Galaxy S and I have even taken to selecting my ROMs based on whether there is a Galaxy S port for that ROM. No other theme will do!