I’m working on a new manager template style, more similiar to MODx branding colours.
The standard MODx manager css seems very dirty

there is more duplicate backgrond images like : ’
managertheme’/images/buttonbar_gs.gif and manager/media/images/miscs/buttonbar_gs.gif
In my css I had removed all reference to external folder of manager template (like manager/media/images/miscs/buttonbar_gs.gif) and now all work fine.
There is only two big bugs:
1) Top bar background colour (the blu row wirh admin icon in top of the manager) need to be modifiìy in manager/frames/topbar.php
2) Manage Resouce (section with template, tv,chunks,snippets, pulig, meta) tabs backgroung images refers to manager/media/images/miscs/...
My questions:
1) how can i modify backgroung tabs in ’manage resource’? where is the manage resource php file?
2) @ core stuff:- I will make a new ’cleaned version’ of standard manager template to concur more easy custom manager template without overwrite original files - can I?