Marc has released a theme for the PSP, the PSPTouch CTF for 5.00. Although there no custom gameboot included in the theme, it has that crisp look.

Mixing the colors of black, white and teal, the overall effect of the theme looks clean and uncluttered. Even the fonts (white) are well-displayed amid the backdrop of black and white lines.

To install this CTF theme in your PSP, you need the CFW 5.00M33 (any update) along with the CXMB plugin running. When downloaded, the theme is in RAR file so you still have to unzip it (download any RAR zip program to do this, but preferably WINRAR or 7ZIP). The CTF file goes in your memory stick in the PSP/Theme folder.

Download PSPTouch CTF