It is customisable. You can edit up your own image and replace it (to get rid of the Screenshots box, for instance) and you can edit how wide it displays the names.
For example, with my skin the default rom selection screen looks like this:
http://img.photobuck...mino/select.pngMy own edited image looks like this:
http://img.photobuck...select_edit.pngI took the image from the main menu, coloured over the GBA image in the background, and copied the small one from the original roms menu image and made it smaller to place at the top center of the edited image. Then using the skin configuration in the emulator I changed it so that the rom names display right across the lighter area in the middle. It takes a little trial and error to get that set correctly, but there you go.