You now seem to have completely removed all of the Categories Dressing files... not sure what you actually did, but you need to have the mod's base /includes/ folder with its files installed. The base stylesheet_categories_dressing.css needs to be in place.

Once that is sorted out, you will want defines for either category 37 or 1 depending on whether Designs should start with NEW PRODUCTS or Animals, and for category 199 assuming that the second Animals is the first category of Clipart. So
PHP Code:
define ('CAT_BOX_HEADING_37','1|0|||Designs|1');//new list - text heading - style 1
define ('CAT_BOX_HEADING_199','1|0|||Clipart|1');//new list - text heading - style 1 
Then in stylesheet_categories_dressing.css find the rule for .catBoxHeading1 and change it to match your desires:
Code:
.catBoxHeading1 { 
    font-family: georgia, serif;
    font-weight: bold;
    font-size: 1.4em;
    color: #335511; 
    background-color: #ff66ff;
    padding: 0.3em 0.4em;
    margin: 0;
    }
Find the rule for ul#catGroup48 and add new rules for ul#catGroup37 and ul#catGroup199:
Code:
/*example for custom category group styling*/

ul#catGroup37, ul#catGroup199 {
    border: 1px solid #bd6699;
    background: #bbeeff; 
    margin-top: 1.5em;
    }
Again, adjust the colors etc. to suit yourself.

Add another pair of rules:
Code:
#categories {
    border: none; 
    background: transparent;
    }

#categories>h3 {display: none;}