I was wanting to do this also,7 to change atleast the color to black on the splash screen.
I have found these files so far in
I will mess around more later,may this is a start for you guys.
root@bt:/boot/ initrdf.img-2.6.38 initrd.img-2.6.38 initrds.img-2.6.38
root@bt:/usr/bin# ksplashsimple ksplashx ksplashx_scale
Ok so ive been messing around,searching google and few things and i think we need to find this file(KSplashx image.) (or bt5-ksplash)
well the file/files remain hidden ive found most all ksplash themes but bt5-ksplash dos not appear to exist in any of the theme folders..
anyway i'll keep looking.
Well still haven't found the bt5-ksplash theme but i found this witch should help http://kde-apps.org/content/show.php/?content=88973