Fix bugs on random server-side generation

srv.js

@@ -44,10 +44,10 @@ app.use(function(req, res, next) {
   if (req.query.target === 'randomize') {
     req.args.bgColor = bgColors[Math.floor(Math.random() * bgColors.length)];
     do {
-      req.args.fgColor = bgColors[Math.floor(Math.random() * fgColors.length)];
+      req.args.fgColor = fgColors[Math.floor(Math.random() * fgColors.length)];
     } while (req.args.fgColor === req.args.bgColor);
     req.args.text = _(sampleTexts[Math.floor(Math.random() * sampleTexts.length)]);
-    req.args.font = _fonts[Math.floor(Math.random() * _fonts.length)];
+    req.args.font = _fonts[Math.ceil(Math.random() * _fonts.length)];
     req.args.icon = Math.ceil(Math.random() * 36);
     req.args.signature = _(sampleSignatures[Math.floor(Math.random() * sampleSignatures.length)]);
   }