Assign a different style to a single menu item in the Helix3 framework (Joomla 3)

Question

There is a site on Joomla3 with Helix3 framework. I need to assign a different style to specific menu item (another color). Through, for example, item-565 does not work. All parent menu items have the same color. Help me please ))

Answer 1

This is joomla docs for making it: https://docs.joomla.org/J3.x:Switching_templates#Assigning_more_than_one_template_for_the_Front-end