How do you make Admin cp css styles ?

[Shazz]

Its not like a regular skin you just can edit in the admin CP...
Ive looked over the files that you upload and stuff but it dosen't make sense...
I wanted to mess around and try to make one.

[harmor19]

go into cpstyles --> [Any Folder]
There you have it.

[Shazz]

go into cpstyles --> [Any Folder]
There you have it.
I see that part...
So you just replace those images and you have a brand new one?

Up =\