Get grandparent category ID?

[yay]

I have a three level category structure that looks something like this:

1. Women
   1. ​Tops
      1. Blouses
      2. Jackets
   2. Shoes
      1. Casual shoes
      2. Training shoes
2. ​Men
   1. Shirts
      1. Long-sleeve
      2. Short-sleeve
   2. Shoes
      1. Sneakers
      2. Trainers

​I want to use a certain color for styling elements on all Men categories and another color for all Women categories. So all sub-categories and sub-sub-categories should have the same color as their "grandparent" category. So my solution was to add this to the body class tag in header.tpl.

{if $page_name == 'category'} category-{$id_category_parent}{/if}

This works great but only for two levels. When I'm in say the Blouses category on level 3, the returned parent ID will of course be Tops instead of Women. I know there is a $category->level_depth command that might be helpful but I still can't figure out how to access the "grandparent" category ID for level 3 categories. Any ideas?

 

[fred-vinapresta]

did you try in your css to put for example:

#category-1, #category-1 ul li a{color: #F3F3F3 !important;}
#category-2, #category-2 ul li a{color: #B2B2B2 !important;}

[yay]

Yes the CSS works but I want to avoid having to add specific CSS for all level two and three categories since that means the CSS has to be updated every time a new category is added.

Edited February 20, 2015 by yay (see edit history)