Hello there,

You can achieve it with minor modification to the slider. Just open that slider in Revolution Slider and for each slide in it click on Link and SEO tab and for the Custom Field type 

data-color="dark"

if you want header skin to be dark for that slider and type 

data-color="light"

if you want for that slider header skin to be light as shown in next screenshot https://www.screencast.com/t/fLnF3zmkKvyh , than just go to Slider Css/JS https://www.screencast.com/t/kqAe4MU3 an din the JavaScript paste this code https://www.screencast.com/t/kg67QaEgj 

var api = revapi21.bind("revolution.slide.onbeforeswap",function (e,data) {
  setTimeout(function(){
    jQuery('body').removeClass('eltdf-light-header eltdf-dark-header').addClass(
         'eltdf-' + api.find('li').eq(data.nextslide.index()).attr('data-color') + '-header'
     );
 }, 100);
});

Also, make sure for that slider in Settings tab https://www.screencast.com/t/GFAgOwA0e that in Api functions RevApi21 is in use.

If you need more help on this please provide us WP Admin access and we can help you with this.

Please let us know if there is anything else we can do for you.

Thanks.

Hello,

Just replace previously added js code:

var api = revapi21.bind("revolution.slide.onbeforeswap",function (e,data) {
  setTimeout(function(){
    jQuery('body').removeClass('eltdf-light-header eltdf-dark-header').addClass(
         'eltdf-' + api.find('li').eq(data.nextslide.index()).attr('data-color') + '-header'
     );
 }, 100);
});

with this one:

var api = revapi2.bind("revolution.slide.onbeforeswap",function (e,data) {
  setTimeout(function(){
    jQuery('body').removeClass('eltdf-light-header eltdf-dark-header').addClass(
         'eltdf-' + api.find('li').eq(data.nextslide.index()).attr('data-color') + '-header'
     );
 }, 100);
});