I've given up on trying to sort this myself but still interested in seeing if it is possible to get it to work... anyone?
if you will search for a 2 years back you will see some users that mod the boot logo you can ask the users that make this but now you make more trouble for your bios just remember: bios logo is a picture with 16 colors with very very poor color pattern so this is making everything in the bios ugly (it's look like the old ugly dos picture utility's)