Changing Nav Bar when Slider is Changed in Elementor

I want to change the color of the navbar text when the slider is changed. The slider is created by slider revolution. something very similar to this website http://jasonarkles.com/

this is the picture of navbar code enter image description here

and this is the picture of slider code enter image description here

I used this code in elementor custom JS to test and change the background, but it doesn't work and because I am not familiar with JS, I do not know how to do it. I also was not able to change the text color at all and I only want to change the text color. if(data-slideactive == "rs-1") { document.getElementsByClassName(".elementor-element-016db27").style.backgroundColor = "#99C262"; } if(data-slideactive == 'rs-2') { document.getElementsByClassName(".elementor-element-016db27").style.backgroundColor = "#ffffff"; }

I will be grateful if you help me.