Adds dark mode on game pages for GoG.com

gog-gamepage-darkmode.user.js

// ==UserScript==
// @name	GoG game page dark mode
// @namespace	https://gist.github.com/NZDev0/
// @author	Dev0 NZ
// @description	Adds dark mode on game pages
// @updateURL	https://gist.github.com/NZDev0/00555bda2dca3ce00413edd4155b56d4/raw/
// @downloadURL	https://gist.github.com/NZDev0/00555bda2dca3ce00413edd4155b56d4/raw/
// @match	https://www.gog.com/*/game/*
// @match	https://www.gog.com/game/*
// @run-at	document-end
// @version	1.0.8
// ==/UserScript==

(function() {
			var styleSheetContent = `	
		body {
			background: #d9d9d9;
			background-color: #222;
			color: #fff;
			font-family: Lato GOG,Lato GOG Latin,sans-serif;
			font-size: 100%;
			font-weight: 400;
			line-height: 1;
			letter-spacing: 0;
			-webkit-font-smoothing: antialiased;
			-moz-osx-font-smoothing: grayscale;
		}
				
		.productcard-basics__title {
			color: #fff;
		}
		
		.system-requirements__minimum-header {
			color: #fff;
		}
				
		.table__row-label {
			color: #B8B8B8;
		}
		
		.review__item {
			box-sizing: border-box;
			margin: 0;
			margin-bottom: 0px;
			border: 0;
			border-bottom-color: currentcolor;
			border-bottom-style: none;
			border-bottom-width: 0px;
			padding: 0;
			background-color: hsla(0,0%,100%,.2);
			color: inherit;
			font-family: inherit;
			font-size: inherit;
			font-style: inherit;
			font-weight: inherit;
			line-height: inherit;
		}
		
		.review__extra {
			box-sizing: border-box;
			margin: 0;
			border: 0;
			padding: 0;
			background-color: transparent;
			color: black;
			font-family: inherit;
			font-size: inherit;
			font-style: inherit;
			font-weight: inherit;
			line-height: inherit;
		}
		
		.product-actions__coming-soon{
			color: #3F3F3F;
		}
		.wishlist-button__state-default{
			color: #3F3F3F;
		}
		.wishlist-button__state-on-wishlist{
			color: #3F3F3F;
		}
		.productcard-os-support{
			color: #B8B8B8;
		}
		.productcard-basics__languages{
			color: #B8B8B8;
		}
		.productcard-rating__score{
			color: #B8B8B8;
		}
		.productcard-rating__votes{
			color: #B8B8B8;
		}		
		.review-new__add-button{
			color: #B8B8B8;
		}		
		.average-item__textline{
			color: #B8B8B8;
		}
		.reviews__info{
			color: #B8B8B8;
		}
		.edition-picker__label{
			color: #3F3F3F;
		}
		.edition-picker-list__edition-name{
			color: #3F3F3F;
		}
		.edition-picker-list__includes{
			color: #3F3F3F;
		}
		.edition-picker-list__price{
			color: #3F3F3F;
		}
		.go-to-library-button__wrapper{
			color:black;
		}
		
		.product-tile--list:not(:hover) .product-tile__title{
			color:whitesmoke;
		}
		.product-tile--list:not(:hover) .product-tile__price-discounted{
			color:whitesmoke;
		}	
		.details__feature-icon{
			background-color:darkgrey;
      left: -12px;
		}

    .details__languages-icon {
    	background-color:darkgrey;
    }

    .details__languages-row--unavailable {
    	opacity: 0.5;
    }
    
    .enhanced-gog-container{
    	color:#3F3F3F
		}`;
		
	var head = document.head;
	var style = document.createElement("style");
	style.type = "text/css";
	style.appendChild(document.createTextNode(styleSheetContent));
	head.appendChild(style);
			
	if(document.querySelector(".module")){
		document.querySelector(".module").style.backgroundColor = "transparent";
	}
})();