Edit the quick access toolbar icons and separators?

[Radu97]

remember if you are using OldNewExplorer any changes in the System32 and SysWOW64 do not have affect on your new commands and edits

I'm not using a OldNewExplorer, it should be the windows 8 default one, I never made changes to it.
I also checked the shellstyle.dll file with resource hacker but couldn't find both option down arrow and separator icon.