Copy from your Windows\System32 folder the file "ntoskrnl.exe" into the working directory.
Also extract the color Palette zip file to the working folder.

Start Resource Hacker open the "ntoskrnl.exe" and go to "Bitmap" - "1" -"1033".
Next click on "Action" - "Save [Bitmap :1 : 1033]..." to the working directory, giving it a name of your choice.

Next start Paint Shop Pro, and load the bmp file you saved in the previous step.
Click on "Colors" - "Load Palette" - make sure to choose "Maintain indexes", browse to the location of "16.pal" and click open.

Next step to do, is to load your modified bmp into the "ntoskrnl.exe"
To do so, start Resource Hacker, open the "ntoskrnl.exe" and go to "Bitmap" - "1" -"1033".
Next click on "Action" - "Replace Bitmap..."

To replace the "ntoskrnl.exe" of your running system, reboot your computer hitting F8 and starting it with command prompt.
Replace the ntoskrnl.exe

for example:

C:\bootscr>copy ntoskrnl.exe c:\windows\system32