When you are going to create a new Admin Style you have to follow only some easy rules.

Each Admin Style has its own Directory below /public/system/style/. When first creating your Style, copy everything from the “standard” Theme and replace the files (with same names) with your ones.

• General information about Admin Themes
• A list of all available Admin Themes

Create the following directory Structure:

--- StyleName
   |
   +--- style.css
   |
   |-------- editor
   | 
   +-------- error
   |
   +-------- menutree
   |
   +-------- languages
   |
   +-------- templates

These are the Files of the main Folder:

• style.css
• active.png
• category_link.png
• category_new.png
• category_unlink.png
• delete.png
• down.png
• edit.png (added for 2.5)
• empty.gif
• failure.png
• history.png
• inactive.png
• info.png
• manual.png
• portlets.png
• success.png
• up.png
• update_perform.png
• user.png
• userdata.png
• user_active.png
• user_add.png
• user_delete.png
• user_group.png
• user_inactive.png
• refresh.png
• user_edit.png
• password.png
• download.png
• menu_fckeditor.png
• menu_htmleditor.png
• item_1.png
• item_4.png
• item_5.png
• item_1_back.png
• item_1_new.png
• item_4_new.png
• item_5_new.png
• access_denied.png
• user_group_admin.png
• user_group_delete.png
• user_group_add.png
• category_go.png
• history_recover.png
• history_delete.png
• save.png
• cut.png
• copy.png
• paste.png
• reorder.png
• folder_in.png
• folder_out.png
• arrow_ltr.png
• back.png
• rights.png
• up_top.png
• down_bottom.png

• category_edit.png (removed with 2.5)
• new.gif (removed with 2.0)
• new_menu.gif (removed with 2.0)
• preview.gif (removed with 2.0)
• arrow_ltr.gif (removed with 2.0)
• back.gif (removed with 2.0)
• rights.gif (removed with 2.0)
• edit.gif (removed with 2.0)
• standard.php (removed with 2.0)
• up_dir.png (removed with 2.0)
• open_dir.png (removed with 2.0)
• empty.gif (removed with 2.0)