Color Search is the third level of Doorhaven. It gives the player a choice that becomes obvious if the player works backwards from the goal. It is also the first level with keys and doors that should not be interacted with, commonly known as "red herrings."
You'll encounter all sorts of different key and door types as you go along! For now, though, let's build some experience. Sometimes, working backwards from the end goal is a good way to get an idea of what to do!
The goal requires a pink key, which can only be gotten by spending a purple key. Therefore, the player should spend their white key to get a purple key.
Pick up the white key.
Open the right white door and pick up the purple key.
Open the purple door and pick up the pink key.
Open the pink door and touch the goal.