@Matthias ✔ @Ronny Rausch I think I have it: view/theme/frio/js/theme.js line 724

/**
 * Scroll the screen to the item element whose id is provided, then highlights it
 *
 * Note: jquery.color.js is required
 *
 * @param {string} elementId The item element id
 * @returns {undefined}
 */
function scrollToItem(elementId) {
	if (typeof elementId === "undefined") {
		return;
	}

	var $el = $("#" + elementId + " > .media");
	// Test if the Item exists
	if (!$el.length) {
		return;
	}

	// Define the colors which are used for highlighting
	var colWhite = { backgroundColor: "#F5F5F5" };
	var colShiny = { backgroundColor: "#FFF176" };