w2v-server: improve heat depiction
diff --git a/templates/index.html.ep b/templates/index.html.ep
index 7e5fb95..d34f174 100644
--- a/templates/index.html.ep
+++ b/templates/index.html.ep
@@ -49,14 +49,14 @@
        function changeCharColor(txt, heat) {
          var newText = "";
          for (var i=0, l=txt.length; i<l; i++) {
-           newText += '<span style="background-color:'+getHeatColor(heat[i]/maxHeat)+'">'+txt.charAt(i)+'</span>';
+           newText += (i == 5 ? txt.charAt(i) : '<span style="background-color:'+getHeatColor(heat[i]/maxHeat)+'">'+txt.charAt(i)+'</span>');
          }
          return newText;
        }
 
        function getHeatColor(value) {
          var hue=((1-value)*120).toString(10);
-         return ["hsl(",hue,",100%,50%)"].join("");
+         return ["hsl(",hue,",90%,70%)"].join("");
        }
 
 			 function bitvec2window(n, heat) {