the sub categories are <dl> and <dt> tags
in the webassist/plugins/side_menu/nested_accordion/accordion_styles.css, you can edit the following class:
dl.nestedaccordion dt.accordionclear, dl.nestedaccordion dt.open.accordionclear, dl.nestedaccordion dt.accordionclear:hover, dl.nestedaccordion dt.open.accordionclear:hover, dl.nestedaccordion dt.open.selected.accordionclear, dl.nestedaccordion dt.selected.accordionclear {
background-image: none;
}
to:
dl.nestedaccordion dt.accordionclear, dl.nestedaccordion dt.open.accordionclear, dl.nestedaccordion dt.accordionclear:hover, dl.nestedaccordion dt.open.accordionclear:hover, dl.nestedaccordion dt.open.selected.accordionclear, dl.nestedaccordion dt.selected.accordionclear {
//background-image: none;
}
the image used for the bullet is defined in the
webassist/themes/MYLATINFOODMARKET/css/configurable.css:A
dl.nestedaccordion dt {
background-color: #DB791F;
background-image: url("../../../plugins/side_menu/images/icon_accordion_closed.png");
color: #000000;
font-size: 16px;
font-weight: bold;
}