Jux Accordion Menu

I have set a Jux accordion menu to show three menu levels, but only two menu levels are showing. The module settings I have used:

Start level: 1
End level: All
Type of Accordion: Click
Multi-accordion levels: Level 3

Advanced:
Parent items link: Yes

What am I doing wrong? If there is some other place to enter settings, I can't find it.

Ah - I understand the issue now. I have changed the plus and minus icons to white, and I could not see the white 'plus' icon on the light grey background of the level 2 menu item. Can you please give me the code to change the text colour and background colour of the level 2 menu items (currently black text on light grey).

Below is the complete custom code I have used for the menu, but the background colour of level 2 has not changed (should be #99999 but it's still #e5e5e5). I have emptied the cache and tried on another browser. Can you advise?

#jux_accord-menu .menu-title {
font-weight: 400;
}
#jux_accord-menu .menu_head.active {
background: #ab9243;
}
#jux_accord-menu .menu_head {
background: #1a1a1a;
}
#jux_accord-menu .menu_head.active:hover, #jux_accord-menu .menu_head:hover {
color: #000000;
background: #ab9243;
}
#jux_accord-menu div.menu_body p {
background color: #999999;
}
#jux_accord-menu div.menu_body p a span, #jux_accord-menu div.menu_body p span span {
color: #000;
}

Thank you - sorry, one more question. What's the code for changing the hover and active state for second level menu items? (Need to change background colour.)