highlightActiveText = function(aTexts) {
		var oBoxIdToColors = {};
		aTexts.forEach(function (oElement) {
			// use the text to identify the correct box by id in the svg image
			var aIdArray = extractAppVarAndTerminologyIds(oElement.text);
			if (aIdArray) {
				var sBoxId = convertToSvgId(aIdArray[0], aIdArray[1]);
				oBoxIdToColors[sBoxId] = oBoxIdToColors[sBoxId] || [];
				oBoxIdToColors[sBoxId].push(oElement.color);
			}
		});
		Object.keys(oBoxIdToColors).forEach(function (sBoxId) {
			var aColors = oBoxIdToColors[sBoxId].slice().reverse();
			addCircleToSvgBox(sBoxId, aColors);
		});
	}
Highlights the active texts
@param {object[]} aTexts containing <code>text</code> and <code>color</code>