iAudio X5L (That would help, wouldn't it ?

(what a silly sod I am...)
Strangely, plugged it in to recharge, and the firmware kicked in.
Rockbox seems to be now in place - still charging though, so I'll tell in a little while.
I'd like a theme more akin to the iAudio one though - is there such ?
Incedentally, how many bookmarks does Rockbox allow ? 20 on the iAudio one seemed a bit minimal (for me anyways !)
I seem to have lost my bookmarks - do they get deleted upon installation of Rockbox ? No big deal, as I can always do them as I need them, pretty sure where each is (audiobooks) - and one other thing - the backlight doesn't give much time before going out. I tried to find it in settings without luck.