When you're starting, you should first find your preferred "style", and it can be closed positions or open positions. If you like a more tactical game, calculating combinations and variations, you should go for open positions, and you should study e4 openings and watch games of players who play this style. If you like a more positional game, conquering small advantages step by step, no hard calculations all the time, you should study d4 openings and watch games with that opening.
After you study a bit how to play an opening with white pieces, you should shift to black. Choose between numerous defensive possibilities that fits your style best, and pursue them the same amount you gave to white pieces. Then shift again to white, and keep the cycle until the rest of your life! That's one of the beauties, it's a stimulating hobby that you can practice at any age.
Most important of all, you must respect your opponent all the time. You can't enjoy the game without a great sense of respect of the human dignity. You should not think of the game as a way to humiliate your opponent and show your strength. You should think of it as a way to have pleasure and a way to allow your opponent the same pleasure (see more about the human dignity principle in Groundwork of the Metaphysics of Morals, by Emmanuel Kant).
1) There is nothing to critizise with KIA or Colle at your (our) skill level really. Mostly a basic tactic understanding will bring us more benefit than seeking deep opening knowledge. So on your plus side you have a Swiss Army knife you can use variably by now whenever you feel like "not thinking outside the box" or inside your comfort zone.
2) However it does limit your ability to learn. I am at a stage where I start grasping positional play. I am more concerned about early decisions leading to positions I feel comfortable with than abt 20 years ago. But actually knowing positions I liked took a whole lot of time. My type of comfortable positions changed (and will change) too.You be missing out on that one in the long run.
It's always a trade off