Wordle (and some other games) do a mandatory pop-up of the instructions just to make sure first-timers understand the rules. This game didn't -- I see now that there's a small question mark at the upper left -- but "clear everything", and then seeing that things disappeared when I clicked on them, was kind of enough. If I really thought about it, I might even say that was part of the fun for me -- figuring out the rules of the system and considering what strategy to use.
I wonder if that could be part of the game -- like on some days, "gravity flows to the right", like the view of the puzzle has been tilted by 90 degrees. (And some days it's up?) Or maybe you can rotate the puzzle by 90 degrees -- so you can transform the right or left side column into the crucial bottom row. Maybe a mystery square, that doesn't have a color or is all colors or switches colors with each click?
Anyways, this game was fun, and had a nice-looking interface. Glad you had fun building it. (Someone once asked me how to monetize a side project, and I said "add it to your portfolio and use it to land a high-paying job.")