Please help me in custom winxp cd

[halfevil]

I did evrything like integrated boot screen,logonui ,winntbbu.dll

Now i want to change the colour of first welcome screen comes after the installation complete

That asking for activate window,creating user account ..that window..i think it is msoob.exe

Can you guide me which file i have to edit in i386 folder to change the colour of the activating windows screen