org.eclipse.help.webapp/advanced/darkTheme.css

@media (prefers-color-scheme: dark) {
	body { 
		color: #f0f0f0; 
		background: #3d3d3d;
	}

	#titleText,
	#searchLabel,
	#scopeLabel,
	#scope,
	a,
	a.active
	a.nolink:link, 
	a.nolink:visited {
		color:#ffffff;
	}

	.button a:hover, .buttonMenu a:hover { 
		border-top:1px solid #3d3d3d; 
		border-<%=isRTL?"right":"left"%>:1px solid #3d3d3d; 
		border-<%=isRTL?"left":"right"%>:1px solid #3d3d3d; 
		border-bottom:1px solid #3d3d3d;
	}

	table {
		background:#3d3d3d;
	}
	.tab {
		background:#7b7c7b
	}

	form {
		background:#3d3d3d;
	}
	
	.separator {

	}
	
	input{
		background:#a0a0a0;
	}

	.button a, .buttonMenu a { 
		border:1px solid #3d3d3d;;
	}
	
	/* darken images to add some comfort while reading in dark theme */
	img {
		opacity: .75;
		transition: opacity .5s ease-in-out;
	}
	img:hover {
		opacity: 1;
	}
}