I have found the file that changes that as well as the start up sound etc. the file is called bootx.bootinfo but i still don't know how to open it to show what is really in it.. i will just paste some text from the first few lines here...

<CHRP-BOOT>
<COMPATIBLE>
MacRISC
</COMPATIBLE>
<DESCRIPTION>
Boot Loader for Mac OS X.
</DESCRIPTION>
<OS-BADGE-ICONS>
(then goes on to say this.)
1010
00000000000000000000000000000000
000000000000000000000000F8000000
000000002B73732B0055735500F80000
00000000F5799DF6004F792B0000F800
0000000000F69D4E004F2B000000F800
000000000000559D2A55F500000000F8
000000000000F69D732B0000000000F8
000000000000004F96F50000000000F8
00000000000000799D4E0000000000F8
0000000000002AF8559D0000000000F8
00000000000079F6F59D4E00000000F8
00000000004E4F00005573000000F800
000000004F9D55F5004F9D4FF500F800
0000F800557A56F50055567A2BF80000
000000F8F8000000000000F8F8000000
0000000000F8F8F8F8F8F80000000000

0000000000F7F7F7F7F7F70000000000
000000F7F7F7F7F7F7F7F7F781000000
0000F7F7F99E9EF9F7809E80F7810000
00F7F7F7F8A4C856F77AA4F9F7F78100
00F7F7F7F756C879F77AF9F7F7F78100
F7F7F7F7F7F780C85580F8F7F7F7F781
F7F7F7F7F7F756C89EF9F7F7F7F7F781
F7F7F7F7F7F7F77AC1F8F7F7F7F7F781
F7F7F7F7F7F7F7A4C879F7F7F7F7F781
F7F7F7F7F7F7558180C8F7F7F7F7F781
F7F7F7F7F7F7A456F8C879F7F7F7F781
00F7F7F7F7797AF7F7809EF7F7F78100
00F7F7F77AC880F8F77AC87AF8F78100
000081F780A5FBF8F780FBA5F9810000
0000008181F7F7F7F7F7F78181000000
00000000008181818181810000000000

now i don't know if you can tell in here but you can definatly tell in the file that those are images there and the file goes on and on and on.
at the end of thos little "images" which there is like one more it says this

</OS-BADGE-ICONS>
<BOOT-SCRIPT>
load-base
begin
dup 6 " &lt;/CHRP" $= if
6 + dup 6 " -BOOT&gt;" $= if
8 + true
else
false
then
else
1+ false
then
until
( xcoff-base )
load-size over load-base - -
( xcoff-base xcoff-size )
load-base swap move
init-program go
</BOOT-SCRIPT>
</CHRP-BOOT>

Now I don't know what CHRP-BOOT is or if it means chirp and it is the sound at the begining or what it is but this file is huge and has a lot of stuff in it. in the middle it looks like a dmg file but it is in text and shows up like if you did not set your browser to download the dmg's or sit's or whatever stuffed item like that.. example:

alright so it looks like it isnt going to show everything here if you want the file let me know. i will also try and relocate it on the system.