Note: each site will have a different code
Here is a quick guide to find the code
#1. First, you need to find Section ID of all sections in your Slider Pro Plugin
#2. Next, use code like this to Custom CSS
body:has(.swiper-slide-active [data-section-id="68bdd6871007d21a55e18c03"]) div.header-nav-item>a {
color:red !important;
}
body:has(.swiper-slide-active [data-section-id="68be52bcd004da13061304a3"]) div.header-nav-item>a {
color: green !important;
}

#3. Explain
- When a slide image is displayed, plugin will add an ID “.swiper-slide-active”
- The code will target this ID and change the color of the nav color.