Early on in the show, the Super Readers were prone to making mistakes while performing their powers. But as the series goes on, they typically go for the right answer immediately. This may be done for saving time for the show (and the later addition of Woofster) but perhaps the Super Readers are getting more experienced in using their abilities. They are kids after all.
So you got a bunch of heroes who can traverse fictional universes with ease and alter a story by replacing and changing words in the story's text. Seems normal, except when you consider this: You have a group of individuals who can travel to any fictional universe and permanently alter the rules, laws, events, continuity, objects, and characters of its reality by changing the very text its based upon! How does it feel to know that the most powerful character in all of fiction might not be an Infinity-Gauntlet wearing Thanos or a sun-charged Superman Prime, but a little kid on a show for elementary schoolers?
If you notice, Jack and Whyatt (brothers) have olive skin, but Joy (their sister) doesn't. However, if you look at the parents, you'll see that Mr. Beanstalk has olive skin, and Mrs. Beanstalk has fair skin. So, in other words, the boys inherited their father's skin tone, and Joy inherited her mother's.
