code: public ClassRecord getClassRecord (String className)
      {
          Iterator<ClassRecord> iter = _classes.values().iterator();
          while (iter.hasNext()) {
              ClassRecord crec = iter.next();
              if (crec.name.equals(className)) {
                  return crec;
              }
          }
          log.warning("No such color class", "class", className, new Exception());
          return null;
      }
docs: Loads up a colorization class by name and logs a warning if it doesn't exist.